Hi looking for a bit of advice please; recently had a decat downpipe fitted but was told that my uppipe is leaking. Now...do i replace it with a standard uppipe or i have also heard good things about Harveys ported up pipes? can anyone give me their thoughts on this , if i get Harveys up pipe, does this mean replacing the manifold with ported headers. Is it worth replacing the headers considering i dont really have many mods at the moment, just a full decat exhaust system, and an exedy organic uprated clutch on a WRX97.

Cheers
Nath