Popped over to Belcher Engineering here in the UK on the way home to ask about a set of close ratio gears for my Fordor.
They manufacture two types of close ratio gears for the Model A gearbox with gears made from EN36 steel, case hardened and run on needle bearings. Straight cut, no synchro just like stock only far better ratios.
Ratios:-
20 Tooth to 27 Tooth
1st 2.2 to 1
2nd 1.3 to 1
3rd 1 to 1
18 Tooth to 29 Tooth
1st 2.59 to 1
2nd 1.55 to 1
3rd 1 to 1
I run the 2nd set behind a B engine in my Tourer and they shift lovely. They currently have six sets of blanks on the shelf so if there's enough interest they'll run a batch off.
They also have a couple of F head kits for sale if anyone is interested.