Been gone for awhile and I'm looking for some x-frame experts on a 1963 Impala. The question is; do you think i need to add reinforcement to the x-frame to handle the HP? The engine is a SB 350/500HP. My sense is if it can handle a 409 ack in the day what's the diff but, I'm no expert on x-frames so I thought I would get some expert advice on this one.
Thanks in avance for any input.