What is It ?

M O R R I S

As i said , I am only going on what the gearbox was branded , And it was not Morris .

Ifn U gunna B difficult then

C R O S S L E Y

LOL

Scammell

Karrier ?

Karrier ?

Looks like Jarrod knows his trucks , or a good guesser .
That was the name on the gearbox .

Ah bit of a guess. Bit not!

At first considered Albion, leyland and Crossley due to radiator style and design. But decided not a major player as name doesn't appear to be cast into radiator. Then noticed the unusual axle hubs! After a bit of investigation using google. found a match in an old Karrier truck!

Refer to-
www.allpar.com/world/karrier.html

Notice the similarity to the axles!

...and now J Blair has nailed it, the prominent radiator and grille on the 1929 cabover is also a dead giveaway..