Still going to need shocks and the OE 80 shocks, that correspond with the 80 coil are relatively short, plus front is pin to pin.
Guess if fabbing the coil bucket, could always lower the coil and shock mount, but seems counterproductive if more than on road handling improvement is the goal.
I don't know what the front "lift" height is on yours, but custom coil springs aren't astronomically high.
I've worked with Coil Spring Specialties out of Kansas on other projects and they've worked great, BUT in those cases it was a matter of providing the VIN specific part number then describing the desired height and additional weights.
May be a different story on swapping out leafs for coils.
Other question may be how much space is outside of the frame rails for coils. Can't recall if you're axles are OE, but there didn't appear to be a lot of real estate between knuckle and frame rail for a coil.
I think I have rear LX450 coils which are softer than the 80, but would have to confirm if they're rears or fronts, the latter very soft and doubt they'd work.
Another possible option may be the early 250 coils/coil bucket/shock tower/shocks that could probably be had at salvage, or even a cheap used set of coil overs from any number of the Toyota IFS specifics, the latter easy to come by.
Here's a "for instance" to mull over on a IFS specific.
These are "custom" but basically a 600lb coil with ~7" of adjustability to raise, 24" extended with 7.5" shock travel.
The upper mount is removable, and exposes a a small eye, that can adapt to any of the through pin adapters that Poly Performance lists for $20.
For what all that crap is worth......
Also, the 80 sway bar is narrow, almost paralleling the frame rails. The rear links attach outboard the frame, parallel to where the links attach and attach at the axle nearly the same width as the radius arms.
Biggest issue with it is, with enough down travel, it'll contact the drive shaft. Ask me how I know.
Send address and I'll package arms and get coming.
Guess if fabbing the coil bucket, could always lower the coil and shock mount, but seems counterproductive if more than on road handling improvement is the goal.
I don't know what the front "lift" height is on yours, but custom coil springs aren't astronomically high.
I've worked with Coil Spring Specialties out of Kansas on other projects and they've worked great, BUT in those cases it was a matter of providing the VIN specific part number then describing the desired height and additional weights.
May be a different story on swapping out leafs for coils.
Other question may be how much space is outside of the frame rails for coils. Can't recall if you're axles are OE, but there didn't appear to be a lot of real estate between knuckle and frame rail for a coil.
I think I have rear LX450 coils which are softer than the 80, but would have to confirm if they're rears or fronts, the latter very soft and doubt they'd work.
Another possible option may be the early 250 coils/coil bucket/shock tower/shocks that could probably be had at salvage, or even a cheap used set of coil overs from any number of the Toyota IFS specifics, the latter easy to come by.
Here's a "for instance" to mull over on a IFS specific.

These are "custom" but basically a 600lb coil with ~7" of adjustability to raise, 24" extended with 7.5" shock travel.
The upper mount is removable, and exposes a a small eye, that can adapt to any of the through pin adapters that Poly Performance lists for $20.
For what all that crap is worth......
Also, the 80 sway bar is narrow, almost paralleling the frame rails. The rear links attach outboard the frame, parallel to where the links attach and attach at the axle nearly the same width as the radius arms.
Biggest issue with it is, with enough down travel, it'll contact the drive shaft. Ask me how I know.

Send address and I'll package arms and get coming.