Anybody have any suggestions on how to mount the trim on a '72 El Camino when the little studs are gone?

I have a new question relating to my previous one regarding my '67 Chevelle SS 396. I'm installing a ZZ 502/625 HP with a Tremec TKO 600 Trans. Should I use polyurethane mounts/stands or OEM rubber or is there something new on the market I haven't heard about yet. I understand the poly will last...

I have a '67 Chevelle SS 396 that I'm restoring/customizing. I'm swapping out the 396 to put in a ZZ502/625hp. The body is off and I'm trying to get all the stuff done that I can. Right now I want to get the motor mounts and frame stands ready but don't know if I need different mounts and...