Quickcell makes APCs on the lowest end, but after that it's scorpions, hetzers, all the 60 ton carriers, and some manticores as (i guess) knockoff Lamborghinis of the tank world.
I think the quickcell fighter would have either a 100, 140, or 180 engine to match the 3 flagship tanks they make, as a 5 ton fighter is more what the savannah master company would make.