i'm looking at doing a street driven 1397, and what i've been able to gather is if you live in a higher humidity area, you're probably going to need 2 batteries. second, balance your compression and power needs with the gas you'll be able to get in the area. so don't go with gas ported 14:1 pistons if you can only get 91 octane. 12.5:1 cr is fairly safe on pump gas. dual fans with muzzy blades if you're in somewhere hot is definetly a good mod. as far as head and cams, i'd say it depends on how you ride and where you want your power. from the dyno sheet's i've been able to see on here, you'll have more power than stock from 2k rpm and higher, even with big cams. just make sure you have all your ducks in a row before you start buying parts. good luck and post pix