R151F, forward shift RF1A and Marlin Clutch, flywheel.
This would be great for your first gen Martin, if the guy wasn't so proud of it! The R151F's low first is nice, but not one grand nice when you can get 3 nice W56 trannys instead and stack transfer cases.
'91 Pickup - Imelda
'08 Tacoma TRD - Donna
'09 Kawasaki KLR650
'12 Gunnar Rockhound 29
"Our task must be to free ourselves from this prison by widening our circle of compassion to embrace all living creatures and the whole of nature in its beauty. Nobody is able to achieve this completely, but the striving for such achievement is in itself a part of the liberation and a foundation for inner security. " --Albert Einstein