Hello! I would like to know opinions from the owners of an exhaust like that, how does it sounds, does it gives any BHP, is it direct fit or needs modifying?

And the most important question what do you guys think is best:
1) replace just the back boxes and use the standard middle section and cat back like this http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWAX:IT

2) replace from cat back all the way like this http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWAX:IT

Also, what do you think of the aluminized steel exhaust system is it worth? http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWAX:IT