I found a 2000 883 for 2 grand in Wisconsin last night. By the time I called, it was sold. Sooner or later I will get one. If you can do the assembly work yourself, a simple big bore, cams and port job will probably run about 1500 bucks. That will give you about 85 hp 80 tq. With bigger bore, hotter cams, Thunderstorm heads, and a bigger carb, you are looking at about 4 grand to get at least 100+ hp, 95 tq in a street motor. No stroking is needed, but if you go larger than 74 ci on the bore, the cases need to be split and bored out for the larger jugs. If you really want to spend the bucks, Baker makes a six-speed for a Sporty since the cases are split. How big is your wallet?