H4 SU Carb 1.5 inch #3266

Hi There,

I have a 1948 Mk IV 1&1/2 with a single SU 1.5 inch Tall top with #3266 body.

I’ve been trying to find one to rebuild as a spare and have had no success.
Tried Joe Curto, SU Dimel, Burlen, etc, all with no luck.

Would anyone on hear have one they would be willing to part with or be able to point me in the right direction or suggest an alternative?

Many Thanks

Bill