You can do this to the black top to but I'm saying becos the silver top is more stable, btw you pay like an extra i dunoo how much depending on your state i guess for a 10kw diference i think its is, you can make up that difference with an exhaust from extractors back which will cost less!!
if you get your stock ecu tuned, depending on where you go and only a select number of people can do this you can get upto 40kw extra sumtimes more sumtimes less from what i know uni group in toongabbie are very good at stock ecu tunning!
like i sed b4 if you get a good exhaust aswell
just those there and a excedy heavy duty clutch and you will be flying
and for the non p platers when you turbo a smaler engine remember you don't need a massive turbo like a t04 make sure its nice n average sized becos the time and effort it takes to spin the turbo using a big turbo on a smaller engine gives you heaps of lag and for those who don't obey the law and race lol on the street u can't afford lag becos the race doesnt last thet long
so smaller turbo less lag greater power boost aswell btw ive seen dynos of 200s that have replaced bigger turbos for smaller ones and actually increase hpwr.
these are sum suggestions on mods you can do to keep you satisfied!