upgrades for super 9

[bparis60]

Hello all,
Need some input, getting a new motor on my 04 S9. it would go 45mph easy on back roads but on hills would go down to 31-35, I'm 6ft 245lbs. what I want is more power, it'll jump from the line and roars right along, but I would like to maintain 40-45mph. any suggestions, recommendations or help of any kind would be great, also still looking for a top case that fits and a better headlight bulb.
Thank You

[streido]

Change the torque spring in the rear pulley to a stiffer one, try a 1000rpm or even a 1500rpm one. You may need to try heavier rollers if you go as stiff as 1500rpm too.