ok well i have an 86 cutlass i have owned it for 4 years and never put it on the road the rear frame rails are rotted off so i pulled one a frame out of the junk yard its off a 78 regal that would be my guess will that be a problem i think i read that there a little different and i am going to bag it don't know much about bags so i need to know what i need and last i am going with a 79 350 and i think a t5 trans that will but out about 400 to 450 hp