I still have the 912 motor mounts in place...basically I am still undecided on the motor spec, came close to picking up a 911T motor that had potential to build on but currently thinking about keeping it a 4 banger for something different....maybe even a Jake Raby Type 4???
Check out Speedo's build, he shows removing the 912 MM's and installing the 911 MM's
http://forums.pelicanparts.com/showthread.php?t=345183&page=2
Chris