a friend of mine today who is very knowledgable about cars told me that a good upgrade for my car would be to replace my turbo with a standard td04 turbo off of an subaru impreza, as these tubos spool up quicker. he reckons that all the fitments are the same and it would bolt straight in, and they are a lot cheaper to buy than just the standard turbo thats in there now. is this true or is he having me on????