Originally Posted by KEVINSKI
The spring perches are different I believe your truck if like my 54 will have the bushings we’re as the newer 55 has the solid no bushing .I think it makes a difference but others will chime in

Thanks Kevinski, that’s why I was asking about changing out JUST the center pumpkin between the two differentials. That way I’d retain my existing rear end housing, perches, springs, brakes, etc.

Care taker of a 1946 1/2 ton. Pretty much period correct original. Danny T, from B’ham, Al