You might have to change that mounting plate??
Go to the parts store and have them pull several mounts,
you might get lucky.
Look at this link.
http://ourworld.compuserve.com/homepages/David_Pozzi/camaro_engine.htm
try one for a 67-68 Chevy pickup w/ PS


Kelly
1951 Chevy 3100
1967 RS/SS Camaro