NO problems with Motor mounts
We've done several swaps into F-Bodys.
We use the HR Parts N Stuff Poly Motor mounts(GN) with the Stock GN frame mounts. We made our own Down pipe from the starting of a Buick Down pipe from Terry Houston (165.00) Don't get the entire down! Just the first 6" or so. Here is a pic of the intstall all done. If you have questions please call us anytime
(219)266-7697 Power Concepts,Inc. Ask for Scott.