XRAY - Model racing cars

hi i am after some more performance from my P5 i want to get a new tuned pipe i am thinking of the nova 3005 and using a long manifold to get the bottom end and could i go up 1 tooth on the cluch bell for more top end for one fast buggy

I have the P5 with the standard plug does anyone know if i could put a turbo button head and plug on and if so what is the advantage of it and i have seen a odonnels cooling head with button and plug for cheap do they use a turbo plug if so would you recommed this
http://www.end-of-line-rc.co.uk/index.p ... ductId=402

Also if i installed some ceramic beaaings on the engine would make a big difference to the performance

back to the pipe which one of these is best for my P5 as i have allready decided that i want a Novarossi pipe

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 0355584286

or

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 0357776859

sorry for all the questions but i only wanted to do one post any help with any of my questions would be much appreciated

I need to keep up with my dads OS Speed and only have around ?100

Thanks in Advance