I have 2 of the ones that clamp on the springs and tighten down.My kid bought the Mancini one that has the lever arm was like 50 bucks.I did the springs in a bunch of cars at work and home with my 20 dollar ones.Even did the ones on my 57 Poly motor which are tight to get to.He did the ones in the 62 300 in about an hour with the Mancini one.Rope in the cylinder then bump the piston up works great also if you dont have a compressor and hose to air up the cylinders.Rocky