AAZ is a harder route in that it is not easy to find spare TDI valve covers or lines, but 1Z/AHU's were more scarce down in the states I think.
wWhat block and pump combo is going to be the easiest m-tdi conversion out there.a I have a suzuki samurai I want to put diesel power in and well I figure go TDI instead of IDI you guys are the gurus so can ya give a guy a hand thnx Jim Morrison