If you go with a stock 4 speed you'll gain a granny gear low. The final drive ratio will still be the same. When I put a 4 speed in my 55 1st I had to have a drive shaft made & cut a hole in the floor to clear the top of the shift tower.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.