Nice haul. I've wanted to get the Fords with the tires on the roof, but they are either not in stock or are nearly $40, which is way more than I'm willing to pay for a body.
I was looking at the SRT chassis that I changed out last night. Upon closer inspection of the pinion and crown seamed to have a lot side to side play. Pressed the hub closer to the frame and then the gears seemed to match better and the test run was night and day compared to early test runs. My mistake for not tinkering with it earlier. But the Bulldog chassis is pretty impressive. It really made that Chaparral better.
I got only one SRT, magnets are too strong for my linking, but can be changed with a regular Turbo magnet bar. It's basically the same as the Bulldog, although the Bulldog has some improvements, better material and better finish overall. I'll be changing over a few Turbos for Bulldogs or maybe let the kids use the Turbos until they crack them.
The situation is similar with the Super G+ and Viper or G3, all pieces can be changed over except the magnets if I'm not mistaken.