3" tailpipes...? A few questions...

[wmhjr]

Ah, the age old debate. Heres my opinion.

2 1/2" tailpipes are extremely unlikely to hurt you as the exhaust gasses have cooled quite a bit by then.

Chevelle tailpipes probably won't fit. You can either find a shop locally that can mandrel bend 3" or you could order some bent pieces online and tig weld them to fit.