contact schmacher enginnering for motor mounts because the slant six is different they make a mount that will allow you to bolt in without cutting. if its got a pumpkin style rearend you will be fine that is a 83/4 if its got a cover on the rear it could be a 8 1/4 whichis good to about 400 hp. could have a 7 1/4 rearend which is worthless. with it being a slant six car the torsion bars will work fine when you dragrace front end will come up quicker and add in traction if your not going to race it and just drive around put v8 ones in