Guess Works is a run by John Guess and specialise in A and A+ series gearboxes. Johns knowledge in gearboxes and all things Mini is absolutely astounding.
His website is an alladins cave of information, ratios and gearboxs parts.
John offers all service options for gearboxes from simple repairs to full rebuilds and off the self new items. He can also custom make the gearbox the your design.
Guess Works have very kindly done a deal to supply the gearbox, housings and flywheel for our project.
You must have a look at his website to check out all the info that is there using the link on this page.