Glenn;
My '57 GMC has a key start on it,and it's always been a four speeder. I think the deciding factor was the V-8,since there was no provision on the V-8 bellhousing for a "stomper",unless mine had the dash push button and was converted.
Speed

1954 GMC 350
1957 GMC 1/2 ton
1962 Chevy C-30
1952 Chevy 6400 dump bed project truck
'98 Harley FLSTC
'66 Pontiac Catalina
'76 Chevy 1 ton Duallie
'84 Bronco II
'78 Dodge W-200
'81 Toyota 4X4 truck