[Roman]

Chevy Mech, the skill and technique of the welder is important. You are right, frames have those little holes all around to allow flex. I’m sure there is some engineering formula to estimate where they should be. That would be a technical question. I drilled the holes back where I placed a reinforcing bracket. We didn't weld all around the bracket to avoid making it too rigid. Several members have done this already; I would have to ask around to see if anyone experienced any problems.