What year truck/frame? The Fatman's replacement crossmember is usually where the motor mounts will go, if you have a motor that doesn't use side-mount motor mounts, you will have to switch.

Not sure if this answers your question or not...


R-Bo

1959 Apache 1/2 ton Big Window, Short bed Fleetside (under reconstruction)
1966 GMC 305V6 in the family