I've got a 2E engine I'm gonna completely strip and re-build, been doin some digging to get the most out of the engine
Modded air box 1-3 BHP
Ported and polished Throttle body 1-3 BHP
Ported, polished and skimmed Cylinder head 4-5 BHP
Ported and Polished Inlet and Outlet mainifolds (To suit head) 2-3 BHP
Performance cam 8-12 BHP Although Khare's has given him a bit more
Up-rated and lightened cambelt pulley's 2-5 BHP and better response
Lightened flywheel better throttle response
New chip 7-12 BHP?

This is to be confirmed, there is much debate on whether these 'performance' chips actually do anything at all, I guess time will tell cos I already got one to put in ha ha
To actually pay for all this work doing your probably looking at around £600-£800!!!!!!!!
Seems like a hell of a lot of money to throw at a car to POSSIBLY make nearly as rapid as its 16v big brother.
Apart from buying the cam and the chip all the other work I'm doing myself so its not too bad for me.