[Ian Grant]

Ian,

The mount (special flange) I can make but the question is if I am able to focus with Angulon 65mm...

Try focusing with a 50mm enlarger lens, in comparison a 65mm will be easier.

As the front standard slides right back into the body there's no reason why you can't focus a 65mm.

A far bigger problem is the 65mm f6.8 will be difficult to ficus on the ground glass, and you may need to make a focus scale. You need to find and try one before spending money.

Iab