I remember Amrac now! They were the predecessor to Lifelike! There may be one or two in my junkyard boxes. No parts available for them now but some Lifelike parts may fit.
The Wrangler car chassis and the no body ones are Tyco 440 chassis. Some parts are available for them. That indy car has the best chassis in it. That's a Tyco 440X2. We would modify those things until they would drive almost full trigger around various tracks. When they would let go, usually the car was broken beyond repair---LOL! Definitely my favorite Tyco. We called them "no see ums" as they were so fast after a lot of modifying. We never ran Indy bodies though. Indy's got used as a base to build a dirt late model on. This was my fastest one and it never got destroyed. It was repainted several times through the years. Started life as one of those Indy cars.
What chassis are under the '40 Ford and '57 Chevy? Tyco there too, but there are several variations.
The ones you pictured are in pretty bad shape. Might take an awful lot of work to get them to run again. The corrosion looks pretty bad and they are not real easy to take apart and clean up. The commutator brushes may be stuck inside the tubes too. Things don't corrode that bad out here in the dry country---LOL! Might be several days before I can see what I have for parts and track, Nick.