This is an area and subject I dont see mentioned much on the site. Transmissions and manual gearboxes along with clutches and clutch linkages, I have had a brief look back on the forum threads and have come to the comclusion that this subject is'nt mentioned much. People on this site must have some technical advice about what works and what does'nt. Sucesses and disasters. EG are cast iron gearbox housings stronger than aluminium ones, are dual plate clutches better for durability than a single plate high pressure clutch ?