Check out My build, you can use either the 70's style mounts or the 80's style either work you just need to fab up the frame side.You can get the front yoke changed to a Ford yoke and have front drive shaft shortened to the correct length (cost me $45 at a drive line shop). T5,T56,C4 or Small Block C6 you shouldn't need to touch the trans tunnel. If you go AOD or a newer trans you will need to cut the tunnel and move it up about 1.5-2" to clear the 12" Torque converter.