We've taken a modern Japanese high torque starter and machined a mounting flange to mate it to an A-Series engine. It has a proper solenoid that positively engages the starter when the switch is activated, and it is powerful enough to crank the highest compression engine. Every race car should have one of these and in fact they are so powerfull you could probably drive around the pits with them (NOT recommended!). Note: NO core charge! Wiring is simple. Just bypass the original stand-alone solenoid to give the new starter battery voltage at all times. Then extend the solenoid start wire to the small start terminal on the new motor. You'll be back up and running in no time.
Mini owners note: for pre-verto ring gear assembly (107 teeth) only. For verto type flywheel ring gear (129 teeth) - order part# C-GXE4527