MGB: coolng fan and clutch

Does anyone know the dimensions of the cooling fan on the 1500 midget? And is there a cross reference from some other car maker that would work?

I have an old spare I just measured and the diameter (blade tip to blade tip) is 12 1/2 inches. The thickness of the center part is 1 7/16 inch. The 4 bolt holes are 4 inches apart. I do not know of any other fans that would fit. It is possible to install a Spitfire water pump and fan blade, but the radiator may hit the fan blades.
Rik

Thanks Rik, for some reason my dad threw out the old fan on our Midget when the fan clutch went. So now I'm trying to restore a bit of original equipment and not spend $300 on two parts. If I can find an acceptable crossover I'll post and let you know. I really appreciate the time you took to measure all that.
Dave

Hypothetically I may have a fan, as the new water pump could not run a fan, so we are putting in an electric fan. When I am at the shop next I will look and see, and get back to you via PM. (it would be from a 77 Midget)