It's an All-or-Nothing Trifecta Grab-Bag Puzzle! Solved by Tom_I and Wendax

[oko94]

Based on a Chevrolet ?

[Otto Puzzell]

Nope

[Wendax]

#3 is Jack Crabbs' 1948 Buick Roadmaster called "Black Flame". The body was sectioned 4 inches, channeled 3 inches and the top was chopped 4 inches, which adds to an 11-inch lowered appearance. Jack's intent was to build and market a low scale production custom car for wealthy people, like the Kurtis Cad and the Muntz of the same time. When he tried to obtain permission from GM he was told that no matter what he did the car was initially a Buick, and the permission was denied.

[Otto Puzzell]

Bingo!

[Otto Puzzell]

PAFW All-or-Nothing Trifecta Grab-Bag #1 / Don Cameron with Jo Raquel Tejada (Raquel Welch) "Miss Contour" / Ford Contour
Point for Tom_I   

PAFW All-or-Nothing Trifecta Grab-Bag #2 / 1932 Chrysler Six Coupe by R.E.A.L.
Point for Tom_I   

PAFW All-or-Nothing Trifecta Grab-Bag #3 / Jack Crabb's 1948 Buick Roadmaster "Black Flame" The body was sectioned four inches, channeled 3 inches and the top was chopped 4 inches. Crabb was denied permission by GM to series-produce the car (though, personally, I don't think it would have sold well).
Point for Wendax   

[Otto Puzzell]

The Black Flame was for sale last years as a dilapidated 'barn find'. Here are some pics of the car in its glory days

[Tom_I]

Great to see this solved after four years, especially #3. I spent hours looking for that one, but never found it.

[Otto Puzzell]

Great to see this solved after four years, especially #3. I spent hours looking for that one, but never found it.

Thank you for getting the ball rolling!