Yes, that's the one! I think the black yellow white combo, is a later version of the same Matchbox (and real life) truck.
The Matchbox car i had of it was white with blue and red stripes, (came in the old cardboard Matchbox box too).
I think both the toy and the real thing is based on a Peterbuilt, but there were some versions (Matchbox Convoy), where it came with/on the back of a Kenworth cab-forward transporter rig.
The more i look at your race truck, the more menacing it appears. Awesome!

With regards to the smoothness of the rear of the Escort roof. Thanks mate! I'm just gutted that the 2x1 slotted slope, doesn't come as a completely flat piece, as i reckon it would make it look even better.
May as well share a few pics of my Speed Champion scale Go-kart i did a while a go.
Unfortunately the wheels don't move, so it's just a little display piece, with zero playability.
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