$1000 is all his friend has. Pipes, better air box, and
dyna 3000. Will require rejetting. Should bump
HP/torque by about 15%. This would be equivalent to a stage 2 speedstar. Should be able to do this around $1000 if you get good prices and willing to do the work his self.
Ever price high compression pistons ($350), hi flow manifold ($140), ported cylinder heads ($1,500), 45mm
carb ($500), camshaft & valve springs ($750). These are just parts costs at MSRP and can probably get them for about 25% off.
Total spending over $3K + labor costs (if he doesn't want to do it himself) gives him about 92hp (stock is about 65) and bumps torque from @ 95 foot lbs to 110 foot lbs.
This should handily beat the HD unless its a screaming eagle or vrod, and probably not the VTX either.
Think the VTX1800 is stock around 106HP and 120lbf torque (but the VTX is ugly

). Kawi VN2000 (111HP and 130lbf torque)
If your friend wanted speed, he picked the wrong bike unless he wants to spend more money. Tell him to sell the R* and get a '09 V-Max. Guarantee he'll beat all his buddies @ 197HP/122lbf torque...

Of course this isn't very comfy for cruising a long time, but who cares, you'll get to your destination much faster
