get a 1.8 zvh m8 you can get them done for around £600 great fun loads of torque!!!! i personally prefer it to the cvh...
i agree there mate i built my own 1.8 zvh and running a std engine through out but running a chip allowing 14 psi and it put out 147 at the wheels (roughly 180 at the fly).
with plently of torque too boot however if you are going to do that get a 2.0 to start with