Stop in for a cup of coffee
The BB 727 is different, yes. I'm actually rebuilding an A500 that might work but its an electronic one. No too stoked. Also, all I got was a stock rebuild kit, new bushings and a shift kit. 4-speed is nice but I think I'll go with either a hopped up 904 or a stick.
I figure the torque from a 273 isn't nearly enough to bust a 904.