Can you put a 13b rotary in a B2000?

Yes, a 13b can be bolted in fairly easy if you have the transmission for it as well. Remove the tail housing off the rotary transmission and the shifting mechanism. Swap the tail housing and shifting mechanism from your truck onto the rotary transmission. This will allow the tranny to bolt like stock. There is a guy who fabs the engine mount, he sells on eBay and you can find the link on Mazdatruckin.com as well. This mount replaces the cross member under the oil pan and allows the engine to bolt in. The hard part is then installing a better radiator, the oil cooler, and all of the engine management wiring.

See the attached link for additional information.

Kyrasis6

Owner of Mazdatruckin.com