I am gradually building up a Mk2 m-TDI with an AAZ bottom and 1Z top. Would hp above 200hp be unrealistic? If it isn't, what sort of internals should I be building with? I have heard that A4 PD pistons would be much stronger than the 1Z. Would the AAZ rods be up to that sort of power?
P.S. I know the Mk2 axles won't like the power but I am just concentrating on the engine now, the body will be upgraded after the motor is built.