Kind of loosely looking around for a TD42 to chuck in my GU to replace the dirty 30. Nothing wrong with the current engine, low k's and goes great, but it ain't a TD42. I want something turbo and intercooled but have NFI on these engines. I'm thinking of buying something that needs a rebuild, chuck it on the stand and slowly build it.
Whats a silvertop and a blacktop?
Differences between the early GU TD42's to the last of them?
Can I use a TD42 from a GQ or should I get one from a U? Any advantage of using one from a later GU over the earlier GU's?
So many questions I don't even know I need to know...Lol.
Just so I know what I'm looking at when I see them advertised.

Cheers.