I got me engine back from the shop and today and i have a similar problem.
I removed these mounts off a 340 block and I built a MP 340 new block. Everything is supposed to bolt straight back on.
The passenger side bolts up just ine. The drivers side is no 1/2 out and doesn't look like it will mount up, not with out some large shims.
Can anyone shed some light on why its different and what to do? Are there more than one mount for a 340 block?