'49 3804 here.
-- Upgraded to early 261
-- Stock SM420
-- Upgraded the rear axle to the 4.10 gear set
-- 17-inch wheels (bias plys)
-- Added seat belts
-- Original Huck brakes and they work just fine. I drive defensively so have not yet had to deal with a stab/panic brake situation.
-- Cruises 65 MPH, dashes to 70. Slow on acceleration, though. Easily cruises at 80 to 85 mph ... on the trailer

-- Not a daily driver. That's what the '88 Army-surplus Hoopty van is for

And farm work gets done by the two Fjords ...