Hy 1fletch, yes you can mount the 41 bellhousing to the 54 engine, your flywheel and clutch should also interchange if I remember correctly. You could also run your 6 volt starter on 12 volts, that won't hurt the starter, as long as you keep the engine in a good state of tune so you don't have to crank the engine excesively to get it to start. One tip, you must remove the flywheel/clutch before you attempt to remove the bellhousing, there are two bellhousing bolts behind the flywheel, hope that helps.
Last edited by 3B; 07/12/2011 3:20 PM.