It's definately a Tamiya F103 in the first post.
I have a HPI F1 sitting in the original box in my basement. Bought it when it first came out ran it indoor on carpet for 3 years and at 2 Canadian National Asphalt Championships. These cars were very fast.....and the front arm flex was unreal...I ran mine solid..no springs....after a few club races I'd change out the arms for new ones...you could see the stress marks. Sure brings back memories of some fun racing.
I'm going to pull it out of the box and see what it's needs. I know a body for sure...wonder if any hobby shops have parts for these babies anymore.
Later