1969 Mach 5 Speed Racer by Streamline Productions.
Streamline Productions released this kit around 19-93. It was one of 4 kits made by Streamline. It included the body, chassis, vacuum formed windshield and front headlight covers, metal wheels and axles, and decals. It's more of a solid cast product.
The other 3 kits they made where The Worlds Fastest Car, Race X's Shooting Star, and one other from the anime series.
This kit is built primarily out of the box. As seen in the photo, it is slightly larger than the later produced plastic Polar Lights version (which is closer to 1/32 scale)..
If available, this product can probably be purchased at - ebay.com