Hi Grassy.
Welcome.
The car originally started here.
http://www.pistonheads.com/doc.asp?c=47&i=2923
I have read back then the orginal bike engine version was one of it's downfalls.
Not sure how available the donor's are over where you are. Rover, Honda K20 engine etc.
One engine of choice coming up is the VW/audi/skoda/Seat 1.8 turbo. Is this one more available for you?
Or buy and ship a complete one for sale???
Not sure on the whole shipping thing though.