I'm contributing this because there doesn't seem to be enough pictures of this process out there. This is the installation of suspension seat frames into a non-suspension-seat BJ73 (1985, if it matters).
Pull up the carpet - the non-suspension trucks have towers welded to the floor that must be removed. There are three - one at the rear inside corner, one at the front outside corner, and the rib over the tranny hump that needs shortening. In truth the front-outside tower can probably be left in place, but I removed it anyway.
I used a reciprocating saw because it was fastest. Worked great.
On my truck, at least, all of the necessary captive nuts were present under the floor. Others have said some, or none, are there on their trucks - might be a year or 73/74 thing.
I drilled a pilot hole from the bottom, and then drilled to the full diameter from the top. And then some grey primer because I had it laying around.
Fits perfectly.
If you're fitting aftermarket seats then you're done. But adapting non-suspension seats to suspension frame is troublesome. Problem #1 is that the non-suspension seats are asymmetrical, the outer slider is spaced way down from the seat. However the inner slider is at the appropriate height for the suspension frames.
The other problem is the mechanism for sliding the seat includes a cable-operated doohickey that swings the seat forward when you flip the "rear entry lever". On non-suspension seats this points inward and prevent that slider from bolting onto the suspension frame.
Dunno how to solve those problems yet. Thinking on it. Here's where I'm at now, I cut off the "deep" slider mount so I can make something more like the inner edge.
If you've got a spare set of seat sliders from a suspension-seat truck, by all means let me know............
Pull up the carpet - the non-suspension trucks have towers welded to the floor that must be removed. There are three - one at the rear inside corner, one at the front outside corner, and the rib over the tranny hump that needs shortening. In truth the front-outside tower can probably be left in place, but I removed it anyway.

I used a reciprocating saw because it was fastest. Worked great.

On my truck, at least, all of the necessary captive nuts were present under the floor. Others have said some, or none, are there on their trucks - might be a year or 73/74 thing.

I drilled a pilot hole from the bottom, and then drilled to the full diameter from the top. And then some grey primer because I had it laying around.

Fits perfectly.

If you're fitting aftermarket seats then you're done. But adapting non-suspension seats to suspension frame is troublesome. Problem #1 is that the non-suspension seats are asymmetrical, the outer slider is spaced way down from the seat. However the inner slider is at the appropriate height for the suspension frames.

The other problem is the mechanism for sliding the seat includes a cable-operated doohickey that swings the seat forward when you flip the "rear entry lever". On non-suspension seats this points inward and prevent that slider from bolting onto the suspension frame.

Dunno how to solve those problems yet. Thinking on it. Here's where I'm at now, I cut off the "deep" slider mount so I can make something more like the inner edge.

If you've got a spare set of seat sliders from a suspension-seat truck, by all means let me know............
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