Graham
I'm selling a ZF M1 which I've just swapped for a new one. Only reason for the swap was gear ratios which are vital for racing.It's had new bearings, crownwheel bolts lockwired etc. I'm selling it for AUS$9000 with an unmachined bellhousing to mate to a Windsor block. Let me know if your interested and I'll get more detail and pics for you.
Regards Ross