I once had a Mark VII where I drilled a 1/4" hole at the bottom rear of each muffler to try & avoid premature rusting. It seemed to work OK. A lot of water dripped out before it worked its way to the tail pipe. I'm wondering if such an idea would work w/ the cutlass, since the chrome exhaust extensions (not factory) get residue on the bottom from water & carbon blowing out. Does this sound totally wrong, or would it matter? The car is loud enough, so it wouldn't increase sound. Just wondering.

 

It used to be most mufflers had a weep hole to drain condensate.

 

Probably work but 1/4" may be larger than needed. I'd try 1/8 - 3/16.

 

^^x2^^

 

The car has Flowmaster mufflers, w/ no holes. I'll try 1/8". Thank You, Al