The Yamaha TZ750, a legend. Best I could do was a Yamaha 1976 RD 400, fully ported and used TZ Reed cage and 34mm Mikuni Carbs. Crank was lighted with balanced. The frame was modified including cutting 1" from the forks. It ran great and was really fast, but not a TZ750. (My crazy friend had Kawi 750 triple & the Denco Killer Cobra kit, clip-ons as the last touch-scary ride).