I have 2 auto type 65 boxes
And 1 4 speed Dolomite boxes for next to nothing is someone can collect from Heathrow area.
One was from a 1850 and the other a Tr7 I believe having said that they are much of a muchness.
The 4 speed from a 1500 Dolly.(very good condition)
The autos would need checking over by someone competent and would possibly need new bands.
£75 for the three
And £75 for the overdrive
I have a sprint overdrive box with the unit off but the box appears to be fine, again someone competent would know better