Given the Dollars being spoken about above and an assumption that you might be ready to do this now i have posted a link to a Turbo Engine that is for sale on another forum

Sorry for the link off site, would normally avoid it but the OP may well be right on the money with this engine ready to drop in for $3.5k

http://forum.mudrhino.com.au/viewtopic.php?t=16108

If i was looking for a Petrol engine then this may be it! you'd prob get $1000 for yours once you take her out too

It looks really really tidy and has got lots of other stuff bolted to it that comes with the sale too.

cheers and good luck