i feel the added hp and tq will show results due to the load from the hill and longer distance. I agree in 300ft the lighter bike will be competitive. What do you think it costs to build a superlight 421 on alky, we can assume what 110hp? lsr ti chassis, bac axle, best of everything as was the example. then lets compare cost to a more traditional build say 18dmx at 165hp chromolly lsr jja, shaws and what not im guessing 200-220 lb handi cap for 55hp probably 35 ftlbs. i might even be low on light bike price estimate. maybe could get a bigger motor.