He does these up in Washington. Last time I heard they were $5300 (labor/parts) drive in drive out. He does a really nice job on his conversions, no hack jobs. I think altogether he's done about 6 of them, plus a few more are supposed to be happening this year. Other than that Toysport in Southern, Ca would be the 2nd choice. Probably not any cheaper and it would be of unknown quality. I can vouch that Dons work is top notch after seeing it in Vegas last year.
That's a pretty engine. THere is a shop here in Austin that will do the install for $1600, that's if you provide all the parts. Very reputable, and they do a very clean install. The owner has a fully built 7M powered MKII, with a T-72 I believe, and he is just waiting on putting a new fuel system in so he can crank up the boost. He'll be looking at about 600+ HP.