I have a Weakends pipe that looks like this one:
I think part of part of performance problem is restriction in the sidebleed. This is a pipe where the stinger is completely sealed. No rivets, no screws. It's solid. I'd need to find someone with something to cut and weld with or go running to a shop.
Will just BBQ even help if I think it's clogged since I can't change baffling, or do I need to a shop for cut and weld? I figure that heavy duty steel wool pad is good enough for baffle material.