I think you have done really well getting that power out of your motor mate so well done. On your last statement though saying efi will only give you a 17 - 20bhp gain is a little off base in your situation. Sure at say sub 230bhp this may be true but now you are getting towards that you simply can't control the fuel accuratly at these sort of boost levels, imo injectors are a must when reaching these sort of boost power levels to ensure each cylinder is getting the precise amout of fuel, where as a firth injector may give a nice full power figure, the efi will give a nice power figure/drive no matter what the tps etc as each load site can be adjusted unlike MFI. With efi you can get both huge gains in bhp but also maintain a drivable car, not to mention cold starts etc, my escort was a shylittle thing on a cold morning.

I would say if you want to be different go efi but try something unconventional.

Kelly Baker - Jamsport do a drive in drive out service using their Gotech ecu, picks the cps off the dizzy and they install everything else such as modified injector rail, fuel rail, injectors etc. Price is around £1600 if memory serves me right.

Mtech Automotive also do a converion I think.

As said above Jano @ Oddkidd Creations another efi/cossie management guru