im gonna build a 16v 1.5TD i think. im going to have access to a full machine shop for 3 months while im at work in alaska. Ford 7.3 fuel injectors seem like the best injector candidate also. they are really really long and skinny. like they would almost fit in a spark plug hole as they are. but i will have to change the thread in the head of course. i think its possible. and HOLY CRAP... think of all the boosted air a 16v head would flow? and since a 16v head is already an 11mm head bolt unit, its compatible with old 1.5's and 1.6's. i once dreampt of a 16v diesel. had a diesel short block sitting in the shop, one day i came home with a 2.0 head someone gave me, set it on the diesel block. it would look so god damn cool to have one of these. im not sure what we would do about intakes tho, since the fuel pump sits about where the lower half of a 16v intake sits.