After a lot of measurements and some debate, we decided on a placement for the motor. The idea is to get it as low and as far back as possible. We were planning to cut up the firewall anyways so we ended up using the motor mounts on the corvette K member to place the engine.
The shifter is going to be back pretty far in the cab now, so I will have to do a console and some kind of linkage to bring it forward. But, we'll cross that bridge when we get to it.