I believe you are right. It was sold to me as a Black Lite, but the top tube is 18.5” center to center. I’m going to look at Rebel Racing for a possible match. Maybe forks are Black Lite. The serial is R1150. I’m going to a pic of the ad and forks. I can add more pics of the forks for reference and benefit of the thread if confirmed. Appreciate the help.
Picked up a chromoly Black Lite frame and fork recently with some decent parts. It was found outside of Jacksonville FL and engraved with the name Stone on the frame and some of the parts. The picture was taken when I got home with in PA.