20VT Exhaust

Hi, thinking of changing my exhaust due to the styling of my back bumper (see thread in styling), but also due to performance, the choice is not that simple.

Current setup is standard turbo, performance air filter, bailey DV36, aftermarket backbox, Gtech 1

I have been offered a cat back duel exit exhaust cat back for:

£400 with 2.5 inch pipework
£500 with 3 inch pipework

also would i see benefit from a 3inch downpipe with my current setup? and is it worth spending £100 more for the 3 inch pipework
Cheers in advance

Anyone?

3 inch downpipe is not necessary with a std turbo. Too much loss of back-pressure

But if you want a GT28R or RS it's a good choice

So from what you're saying I should wait on the pipework until I uprate the turbo otherwise the lack of back pressure will lose me power or not do the oil seals on the standard turbo any good?