Hi have also answered your post on TMF for classic Mini's!
I have posted lots of info on early MINI gearboxes on the MCR forum here which may help you: Early MINI Rover Midland Gearbox - Forums Mini recon gearboxes |BMW MINI cheap gearboxes
Mini Gearboxes Ltd were featured in Modern MINI magazine July-August 2010 issue.
Their prices for an exchange recon gearbox and new clutch fitted to a MINI:
5-Speed Midland gearbox £595
5-Speed Getrag gearbox £690
6-Speed Getrag gearbox £750
Recon box supply only from £325
(Ask for a quote on upgrading from Midland to Getrag as additional parts are required.)
Main Dealers quote a minimum of 6 hours for job, 'Mini Gearboxes' fit up to 15 Midland gearboxes a week and have got the job down to around 4 hours by removing the front subframe only from below, instead of the modular front end/rads/bumper assembly. Full method with photos showing stage by stage in MM magazine above (Issue 41).
Some good feedback on the above company and their Midland to MCS
6-speed Getrag gearbox conversion below (£1300 including parts): http://www.mini2.com/forum/first-gen...ml#post3773125