want ma car to go faster instead of te 1.3 its in it just now its just not fast enough and lookin for a cheap g40 engine
There is one for sale in the for sale section. Might be good place to start.
cheap and g40 engines dont usually go together, especially if you mean full conversion as it suggests, not just the engine.
Expect to pay between £600-1200, depending on spec, mileage etc