does the c32's exhaust tips say amg on the top like the c55? if so, where's a place i could buy a c32 exhaust beside the dealer?

Yes they do. You can find used ones on ebay occasionally or try the classified section of this forum.

could the amg muffler bolt on to my stock 230k piping or do i mostly like have to weld at a muffler shop?

will it affect my hp since i have a 230k. will it actually decrease or increase hp?

It wouldn't be a straight bolt on because the pipe diameters are different, so a muffler shop would have to weld it together using an adaptor.

HP gain/loss has been debated and no good answer has ever been reached. I know a C230 owner who has the AMG exhaust on his car and it doesn't seem to have made any difference in performance...but it looks GREAT!

i found a c32 exhaust slightly used on ebay for $299. is that a good deal used?

Depends on the condition of the tips.

it's pretty good. My friend had it on his 230k sedan before he Brabused everything. He bought it for 5 and sold it for 3.

not bad. is the c32 exhaust louder than stock by any chance?

from what i remembered it's definitely louder than the stock.