I have used the later style roller pilot bearings instead of the bronze bushings when installing the a-833. The roller bearings always fit the crank hub. If the crank hasn't been drilled you can use the roller bearing as a guide and drill the back of the crank, that way you don't have to hack off the end of the input shaft on the transmission.

http://www.brewersperformance.com/proddetail.asp?prod=PRB5300