Another what type of lift do I have tread - Skyjacker?

[mmw68]

I've searched... but Iam really not finding the answers I need, so Iam asking for your help.

Before I go out and buy new tires, I want to get the lift correct. BFG 33x10's are what I'll be purchasing.
Bushings are shot, shocks are good, and spring look to be in good shape. I believe the kit could be Skyjacker - the shocks are.

So, new bushings, and shorter shackle are the plan.
Iam looking for the best ride in town, so the shocks might change as well.

Looking for input please...

 

[mmw68]

Now for the rear...

 

[mmw68]

A few more pictures...

 

[Subterranean Nik]

Pin to pin on shackle looks to be ~5-1/4" so 2-1/2" longer than stock (stock are 2-3/4" length pin to pin). As to your spring lift, it does look like either a 2" or 4" skyjacker lift springs as those look like the springs on my brother's 40. As to ride quality, longer springs would help achieve a more ideal shackle angle. I would start with the shorter shackles as you mentioned above. Good luck and great looking 40!