There is a thread already started on a Gilmer from rcgarage berlin which in my opinion is for the advanced CNC fabricator, but nonetheless shows how involved it will be to get these cars completed beyond your standard 1:4 scale.
Hopefully in weeks to come I will do my best to incorporate hardware that Gilmer himself used on his first prototype midget starting with the gearbox and then some sort of nitro engine, Abitar twin cam or saito twin 90, both possible application with couplers to hook it all together from the gearbox manufacturer and then onto the axle sprocket and chain or cogs and belts.
Hopefully this all comes together in a few simple straight forward steps with minimal if any body and chassis cuts. Hope you enjoy and input always welcomed!