[TR] Tr3 and TR4 Gearbox part numbers and interchange

[Randall]

> Sounds like you need the factory parts manuals for all of 
> those models. 

Which you can find (and download) here
https://is.gd/qAcphe

-- Randall 
56 TR3 TS13571L once and future daily driver
71 Stag LE1473 - awaiting engine rebuild
71-2-3 Stag - awaiting gearbox rebuild