One wire lock-up, 4 spd automatic w overdrive into A-body.

Good advice! I tried to position the engine as evenly as I could using the Schumacher mounts. I understand the engine is offset to the passenger side a bit to offset the torque or some other reason, but I tried to bet the mounts equal on both sides before I tightened them up.

I did notice that exhaust was about an inch or less farther back than it was before, especially on the driver's side. In other words the headers seemed to be more towards the front of the car than when I started. I thought that was odd, as I never removed the exhaust system and has something to do with the built-in play in motor mounts and K-member. I have the exact same headers and exhaust pipes. They will bolt up, but only if I use slightly longer bolts to get them started. When I do tighten them up, it will put significant stress on the pipes & headers, so I will leave the K-member and the engine mounts a little loose so it can slide back as far as it can if it has the clearance to, so that stress will be minimized. I assume that the K-member doesn't really move around on the 4 bolts that much, so it is likely the motor mounts that will slide rearward a bit.

I will try and keep the transmission centered in the tunnel too. I had to pick up some metric bolts to attach the poly-lock rear trans mount for when I make my template for the rear bolt-on crossmember.