OK, I will give you my $0.02 on this (do with it what you will) as I recently replaced the exhaust system on a 1996 Accord I picked up for my daughter. After doing quite a bit of research on the Internet as to what to buy and reading more than a few statements that Bosal was "exactly like" and "identical to" and "just the same as" the OEM exhaust I bought all the parts from Rock Auto. Well long story short, Bosal might produce the OEM Honda exhaust for them but the aftermarket stuff is no where near the same as the OEM. This car has four pipes on it (two in front of the converter, a long one after, and then the pipe/muffer assembly). On the OEM the two front pipes are double walled (the one after the converter might be too I just forget) whereas the Bosal aftermarket is single walled and much thinner. In addition the short little pipe in front of the converter was a slightly different length and slightly different angle/orientation in the Bosal version than was the OEM. The long pipe after the converter was again shorter in the Bosal version and both required some pulling and sweating to get it to line up correctly. And, the flex joint area of that pipe was of inferior construction compared to the OEM.
I ended up sending most of the Bosal stuff back and ordering Honda OEM from an online dealer (and paying about 60% more). FWIW I didn't do this replacement because of rust or because it wore out, it was damaged by the previous owner. The OEM parts (except for the pipe after the converter with the flex connection) were in good condition prior to the damage.
I've also purchased exhaust parts (muffler) for one of my other Asian cars and in general I have become a firm believer in OEM exhaust parts. I just find that they fit much, much better and the construction is of a higher quality than any aftermarket pieces I have seen.
