You're wrong :yes:
Boost is not RPM dependant. Its load dependant.
Yeah maybe in won't make boost until about 4-5000rpm...... in first or second gear, But what about in 4th or 5th gear!? :dance:
Just did a quick google.....
http://www.melett.com/turbo-parts-catalogu...achi.pdf#page=6
They from a 3.3l Turbo Deisel Patrol.
Here's the thing with deisel turbos onto petrol engines, yes it would normally be too big, but remember that a deisel does half the RPM of a pertol engine. Hence you can get enough exhaust flow through them to spool up on a much smaller capacity petrol engine.
I say give it a crack, brand new and looks pretty cheap.
I know a guy here in Tassie who has a different type of deisel partol turbo (was VNT) on a datsun A12 (1200cc) motor and that spool pretty damn quick. This was in its very primative stages......