I would like to buy a pair of rear targa latches in good condition.

I have this set in good condition, PM me if you are interested.
Cheers,
Dominic

There are early and late rear targa latches. The humps are different height and wudth to march thevrubber block that locates on the humps. Early ones gave the small humps. These are restored. The other ones offered are late. Not a clear cut off on where each was used. Look at yours and compare.
.Bruce

Mine are about 7 mm's high.

Sounds like you need late latches. I sell them for $75 a pair plus shipping.