Body lift is probably way cheaper to just buy. Then you'll get all Poly, and hardware needed. Somethings are just easier to buy then make. I know guys in the past that just drill holes in hockey pucks and stack them to the desired height and toss a longer bolt in them. My body lifts in my jeep were DIRT cheap came with all hardware, poly crush bushings for top and bottom, and that hardened plastic (whatever) it is they use risers. Good luck post some pics.
My old parts manager had one of those, and he always tightened the shit out of the torsion bar bolts up front and it jacked the front right up. Not sure if you yr make model has the same option to do so.