I would back the 1.8T 4WD option. I have just never seen the point in VR's, just thirsty and make a nice sound. Surely with standard rods you can take the 1.8t to near enough 300 on the nose with good mapping on a KO4 with the trimmings (intercooler etc)? Anyhow, moving back on topic. Would be an awesome project to undertake, if you feel you and your mates have the talent to pull it off just go for it!