B73Buddy

Enjoyed reading the comments guys.  Correct as the L model (CA-31) cab did become an option from 58-66.  The B73/B75 came out in 55 with only the B cab at first.  As the one gentlemen posted, it became known as the Studebaker cab.  My dad sold his 1950 LJ in 1957.  It order for a lighter GVWR, he purchased a B61 with 170 hp Mack motor.  He immediately disliked the smaller cab and less power.  He later that year saw a B73 L cab  pass thru the Syracuse area from Florida and inquired about it at a local Mack Dealership who was unaware of the option and said it must be homemade.  He checked with the Mack Factory Branch in Rochester and they pulled out the sales brochure right away.  Dad ordered one immediately and sold the B61 after only 10 months.  He eventually owned 2 B73 L cabs and I restored this one to model the latter one.  My brother has dad's actual first one in his garage after buying it back from it's 4th owner.  It remained local from when dad sold in in 1969 til purchased back in 1993.