Having judged many model car contest , I must say the firing order of any given entry, was never an issue. However the many responses above certainly have their wisdom and worth.
Lots of early Tee Buckets were made on a "tube" frames not unlike the parts pack example. Cotten Werksmans low Ardun powered Tees come to mind. And of course, there were others.
These guys were a little bit different with their "axle" holes.
(Made necessary by the use of metal axles used to mount the wheels front and back. )
Of course these later year kit offerings had longer transmissions.