1968 barracuda K frame.

It depends on how you want to install it. There was a big block specific k member for 67-69 and left side engine mount bracket. The left side front of the block was drilled to accept the mount bracket. Easiest way to go about it is use a spool mount V8k member and modify the passenger side mounting ears and use spool mounts. @Jim Lusk has the measurements for the mod on the k member.