Have you check how Redcad did their Lowrider Impalas and the others?
Redcat Lowriders have topspeed 13mph.
I believe that what ever you do it can not be driven faster than about double that speed
25mph max. 20mph maybe better.
I would have it to drift outside with, drift tyres to those wheels.
Kyosho Fazer is a good Outside drifter because covered drive train.
And drifting outside at parking lot is fun. Also indoors at real rc drift tracks if you have any near you.
Drift tyres and 2s, go down 2-3t
You need lift it only about 2mm front and 3mm rear for drifting.
Always 1-2mm higher rear. Extra spacer. You need have front down more than rear
and also stiffer rear shocks in drifting.
Tires must be like these to fit and roll free in front atleast
Outer sidewall must look like these
Soft springs front,
tight springs rear shocks
Front More toe-out
Rear Less toe-in
if possible, maybe not in Fazer
Adjust if possible
Lower ride height in the front
Higher ride height in the rear
Negative camber 0.5 all 4
Front diff oil 20k
Rear double or triple that about 50k
After these easy mods you will have one very nice drifter.