your rear measurements will be close to mine but i am still contending with a driveshaft problem as the car is set up real low am planning on a 8 to 10 in lower frame ht with body on top of frame and run a 30 to 32 in tire so i may still have to modify the center seat mounts so they sit right on top of the tranny tunnel . i looked at fibreblass buckets but they arnt very comfortable . have to see what i can find at the local wrecking yard.