I know one is a Raco, the other a tube chassis similar to some I've seen on this site.
The only Raco with similar front end appears to be a trophy truck. Suspension seems set up for dirt oval.
Not sure about the tube frame. There is square tubing forward that appears original but all mounts are set for round mating surfaces. (Composite boatbuilder mixing terms, sorry)
https://goo.gl/photos/4AtBUPWJ5knsMYVD7
Thanks for looking and any thoughts on what they were/are.