Thanks 3in84toy, my 253 is a baby V8 so shouldn't be too much bigger.
Yes Baldy I just remeasured both chassis width wise and the '38 chevy is 915mm wide, the HQ is 1445mm wide.
Our first Holdens started in '48 prior to the GMC
so didn't have running boards.
My Holden chassis is off a '71 HQ 1 tonne ute.
The 3 tonne chevy I have appears to be much the same as your 1.5 chevy.
Our version of your trucks (i.e right-hand drive) look much the same as yours with running boards and all.
