You gonna chop & channel that SS Perfomer too?
How 'bout headers for the exhaust?
Make sure you use hi-heat primer !!!
There's specialty cabinet hardware places I've found online that may have something for that....I'll look back, as I've got stuff for other projects before.........
Failing that, you could get square wood, near to size, shave it down to fit, insert, drill @ slightly less than the thread size twist it in.....just make sure you screw straight.....