You will need about 4" of lift to fit 33's. And you are already running dangerously long shackles. 1.5" lift shackles would have to be 7" long from bolt to bolt. That screws with your steering geometry and puts a lot of stress on the shackle hangers. I would NEVER run more than a 1" lift shackle.
If I were you I would replace those shackles and get some lift srpings at the same time. You can also look into flat fenders or TJ flares with trimmed metal to help clear larger tires.
If you are dead set on keeping those shackle you should be able to clear 33's with another 2.5" of lift. But you wouldn't ever catch my rig with 1.5" lift shackles on it. It's just not safe.
1995 YJ 2.5
- 4” RC lift - 1" MML - 33's - flat fenders front - TJ flares rear -Raptor lined exterior - Herc'd interior - DIY front bumper & winch plate - 136 amp alternator mod - 4.0 TB swap
My build thread...
I've got a shotgun, a rifle and a four wheel drive...