[79 blue monster]

Aright, so I bought a Cadillac 500 to take the place of my 454. Anybody know what to do to get this thing to fit? I converter to hydro boost brakes so my booster doesn't hit my valve cover. My problem is after I drilled new holes an inch forward in my trans cross member, the head on the driver side still sits about 1 millimeter from my firewall. Plus I'm stumped on my engine mounts. I've read that you have to make extension plates, or I've read that you have to move the original mounting plates further forward on your frame. Anyone that has done this and has pictures or knows about this stuff please help!!!