I have a '62 w/stroked 350. The only headers that fit well for me were block huggers. Lots of manufacurers make the block huggers for SBC. Mine are Patriot from Summit. Suggest you may want to also consider some flexible pipe connections from Summit to take off some of the pressure off the headers. But, I was using a saddle front motor mounnt. If you have side motor mounts, then I am not sure if the block huggers will clear the motor mounts. Someone else can answer that I'm sure.