Gearboxes for sale as well at bargin prices, brought a rover 45/ MG ZS diesel one for my maestro turbo project as ratios simular, could be put in to the 180 and give it a longer 5 gear
http://cgi.ebay.co.uk/MG-ZS-120-MANU...QQcmdZViewItem
http://cgi.ebay.co.uk/ROVER-45-MANUA...QQcmdZViewItem
http://cgi.ebay.co.uk/MG-ZS-1400-160...QQcmdZViewItem
http://cgi.ebay.co.uk/MG-ZR-160-MANU...QQcmdZViewItem
message me for info on ratios, if you need help in chooseing. also has lots of other cool stuff, (MGF steering wheels, cylinder heads, Xpower exhausts)