These engines are easily fit for 350-400 bhp with no internal modification required as i was seriously considering a mk 1 golf gti with the 150bhp engine then gettin a jbs conversion!

www.jbsautodesigns.co.uk/conversions.htm

I also spent 16months doin my research on every site relating to vw performance and forums

The main problem/restriction is the turbo and manifold strangling hp engine is 1 tough cookie

The only reason i didnt go ahead was i cant get away from owning a 3dr cosworth in my lifetime so that has to come first

I must admit though i went in a mk 1 golf gti (converted with g60 engine)running 230bhp and wow couldnt see much keeping up to be honest
amazing car so much fun and to me thats was driving performance cars is about!