After cleaning up and prepping some of the mounting area I installed the gearbox assembly. Used original bolts to hold it in place for now. Chased threads on bolts and nuts to allow easier threading. M8 threads. I will replace these bolts with AN5-60A and AN5-80A bolts when sourced. AN5-60A bolts are available from AC Spruce for about $14 Cdn. per bolt. Not cheap for a bolt but let's see. Awaiting quote from AC Spruce for the AN5-80A bolts. I got quotes elsewhere for those bolts. One company quoted me a pricy $125 per bolt. I thought that was crazy until I received a quote from a second company. $2500 US per bolt! I'm sorry but that's absolutely ridiculous. If you don't want that business, just decline to bid.