Any body know if this'll sound ok on a hawkeye wrx ?? 

What are you running at the moment?

Had a prodrive back box, bought a Chinese 2.5 rear box (really good quality tbh), cut the prodrive box off and welded the Chinese one on and put brackets on, just thought this was a cheap ninja so worth getting

They are supposed to be pretty good... you could always look into getting a new centre pipe or decatting the pipe after the downpipe to release some more noise

Would I need another remap ( God forbid lol) for a de resonated section before the rear box

wanna leave the cats alone tbh mate

Won't need a remap when fitting a rear and/or centre section.

Cool, thanks scoobs