1969 Series IIa - no third gear

[Jim-ME]

I need a to completely rebuild my trans as mine is really noisy in all gears. I am leaning towards a rebuilt 2a but you never know what might be available.
Jim

[WilsBoar]

Just found 2 SII gearboxes close by. One from a 1958 109 and another from a 1966 88.
From what I have read here, the SII should mate up with my SIIa hardware.

How far am I moving backward if I don't use a SIIa gearbox? Assuming that the gearbox is in decent shape and won't need rebuilt immediately.

[yorker]

Assuming that the gearbox is in decent shape and won't need rebuilt immediately.

Assuming that it will be just as good as anything else would be.

[I Leak Oil]

Assuming it's original to the truck, I'd go with the '66 gear box and not the '58. The early box, being an earlier suffix, is a) potentially weaker because of the smaller layshaft components and b) will be harder to find parts for. The later box should have some of the updates as it relates to the layshaft.