This is my first venture into the TDI section, so be gentle!!!Ive been after an 1Z engine, or block and head for an mTDI project after a bit of PM exchange with oldschoolrich; I have an AAZ in the caddy and will tune it up within the stress limits of the AAZ (1.6GTD pump and upgrade from K03 to K14 etc), but I am after more bhp than 150bhp and so am considering the mTDI route... as is usual here in Ireland, sensibly priced td/tdi 'base' engines are hard to source, but I know of a 93 Audi 80 TDI which I think is 1Z engine code; is this suitable for the usual mTDi treatement??? Ive been told that even though they share the same engine code, they are 'very different' from the vw mk3 TDi 1Z...I cant see how apart from the north/south (Audi) vs east/west arrangement of the Mk3; surely they are the same engine???There is one at a salvage yard, where I am 'a regular'; its missing bits from its pump, but that'd be a good bargaining point, and I wouldnt need any of it anyhow for the mTDI approach...The engine might either find its way into my 86 Passat or possibly the caddy...