I have very recently bought a 1985 GMC Jimmy that use to house a 305. The motor was not included in the purchase. I have a Chevy 454 that I would like to put in this truck, but am unsure if Chevy 454 mounts will work on a GMC Jimmy frame. Can anyone help out here? Are the motor mounts universal between a Jimmy and a Blazer, anotherwards are the frames the same on both vehicles. Thanks for the help!