When Michrina's bought the company back (1973-74ish), one of the brothers (don't remember which one) started making the "MiniMate" mini bike and that's what started the later style frames. They were powered by a Clinton engine and used a clutch brake, they had straight forks and the foot pegs were welded on. In 1975/76 the Lil Indian "SkyHawk" adopted the same style frame although it had a Tecumseh engine with clutch brake, the forks bent forward like the later models and the foot pegs folded like the later models as well. I don't know what colors were available, I have only seen one and it was dark green, I'm not sure if it was original paint either. My early 80's small frame has the brake on the rear wheel so my guess would be it's a 70's "SkyHawk" frame or someone cut the brake tab off a later frame. If it says "Genuine Lil Indian" on the motor plate, it was made in 1999 or later.