I gots me a B2200, '93. Blew the engine in that puppy last March (which is when I started lookin for a new engine for it). I ended up getting it replaced under warranty from the guy I bought it from (how sweet is that?!).
Anywhoop, I approached a guy in town that runs a mechanic shop and hes got like 4 RX-7s sittin around that he puts Chevy 350s in, and he told me that he would put any engine in my truck for $3000 if I provided the engine and transmission.
So it would be $3000 +cost of engine and tranny. He also told me that there was no point in putting a non-turbo rotary engine in (but Im sure that some of the N/A guys on here might tell you other wise).
My truck is running right now with a stock B2200 engine that the guy took outa a scrapped truck and put in mine for free. But when Im all done with my lil project that Im a workin on at the momment I will be investing in a 20B engine to go into my lil ol B2200!
You have to remember that if your swappin the rotary (or any engine) into the B2200, your gonna need a bigger rad, better compooper to run it alone with a bunch of other things, which you can probably find at the scrap yard. Personally, I'll be buying practically everything new and upgrade equipment before I even put it in, so I wont have to upgrade later.
If yah got anymore questions or what have you PM me or email me or sumfin, cause Ive pretty much researched the whole shibaz already.
PS- All prices above are listed in Canadian dallas.