OFNA was a distributor not an OEM, they rebranded cars from many different OEM's where the 2 most popular brands were HoBao and HongNor, both are still in production to this day, you just need to look for your specific chassis:

https://www.hobao-usa.com/product-category/rcparts/

http://www.rc-willpower.com/Cart/ind...y&path=487_495

You might be able to cross reference your part number on one of those sites!