Hi All I had an interesting conversation today in my search for a gearbox specialist who can fix a manual tranny we've removed. I remembered the kit-car place close to where I grew up, found their website and gave them a call. I remember reading their site on the use of the PRV and the UN1 gearbox (identical to the 369 apart from the linkage). To cut a long story short, they have gone through the exact same problems as DeLorean owners who drop in a big engine and break input shafts - particularly in GT40 replicas apparently. I need to do some more investigation, but they have a guy who rebuilds their UN1 boxes with strengthened input shafts _and_ a limited slip diff. The GT40 replicas use a "long legged" final drive to give a good top speed - which bears out what I've been saying about the final drive being the key. All the performance Renaults using the UN1 or 369 have a 3.8:1 or even 4.1:1, and they never break... I will find out more in the coming week when they strip our box down. Martin DMUK To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/