I've just realised how unclear my original post was after re-reading this entire theread. I already have the parts for the conversion - engine, box, shafts, ecu, ancillaries etc which I know are all good.
All I would need to do before the lump goes in is fabricate my own bracket for the engine mount. No problem; splice the looms, or buy a loom adaptor (readily available by all accounts); fabricate a suitable down pipe and
The 1500 would be the cost of any bits I don't already have, or materials for bits I can't make plus fluids etc. I can do it, I reckon 
go for it, you should be abel to do that with ease
