So it was relief I learned this week that the gearbox internals were in good condition, and all it need was a few synchromesh rings - in fact about the least I could have hoped to get away with. It should be back with me in a couple of weeks.
An aside I was interested to hear a comment Jez made when we were inspecting the 'box, comparing the weight favourably to the later G50 units. From what I'm able to tell, the various weights as follows;
- G50 gearbox used in the later Carrera 3.2s ~70kg
- 915 gearbox with aluminium cases used in the SCs and first 3.2s ~58kgs
- 915 gearbox with magnesium cases used in the '72 and '73 911s ~50kgs
The stronger aluminium cases were adopted when Porsche started to worry about the torque of the bigger engines, but from what I can tell from other owner's experiences, with sympathetic use the mag alloy cases do just fine. Certainly losing 20-odd kilograms from the tail of the car can only be a good thing.