I have heavily considered getting a truck for road racing for years as a W2W option because they are just so cheap (comparably, nothing is exactly cheap about racing) and easy to maintain. Will be interesting to see what you think of the PG v. the Jerico on a road course. I figured I would look into doing the direct drive setup with a TH350 to have a couple gears to select on the track. Willow is such a fast track the PG might be fine to run in essentially one gear. That truck with a Jerico should haul on WSIR and they definitely handle and turn laps at levels greater than cars 10x money invested. If I were still in SoCal I would have done the same thing by now and bought a truck to run in NASA.
I too spent many a weekend baking in the sun at Saugus, MM and pretty much any paved track that was in SoCal in the 90s including Orange Show and El Cajon, and then plenty of time at Irwindale in the 00s. A very good friend of mine ran a Super Truck (#58 Scott Calvin) in the late 90s to early 00s and I have dug them ever since

IIRC that had a direct drive auto in it...
Good luck with the project!