I am completetly going insane on the replies around here.
Stage1 : Air Cleaner, Ignition, Exhaust and Mapping.
(all basic fixes and make a world of difference)
Stage2 : (open up the engine, minor tweaks)
Cams, porting, chips, add ons (eg. NOS)
Stage3 : Is a total upgrade of your engine, meaning you want more CC's.... so you do a big bore kit. Chop off the top end and replace it.
If you want reliable..... for example I would take a 96'
: High flow breather, slip ons (watch that you take out the Cats with stock exhaust), 255 cams (take your pick) and then put it on the dyno (or just a good map at a local dealer).
On that motor..... over 20Hp gains, should have over 100ftlbs torque and still has your motor warranty.
Keep that cruiser on the heels of any Sporty if not passing one.