exhaust system to power up without lots of repacking, etc...

[Weaver, Mark]

i made the terrible mistake of demo'ing an Aprilia SL1000 Falco over the weekend. Oh my gawd what a motor! i realize that a klr is not ever going to be a monster-bike like that, but for the first time i'm starting to think it might not be a bad idea to rejet my bike to coax a few more horses out of it. I know i've always said "if i want to go faster, i'll just buy a bigger bike," but i'm now trying to avoid doing so, despite my new obsession. on the other hand, i don't want spend a ton of money, do a ton of work to customize it so it'll actually fit, and then have a finicky exhaust system that i have to repack all the time (whatever repacking is). i'm putting about 1500 miles a month on my A14, so i'd like to keep the periodic maintenance to a minimum. i've read lots of horror stories about how poor the worksmanship is on many of the aftermarket exhaust setups. so here are my questions: 1) is there any consensus on the best fit and finish and durability among the exhaust systems currently out there for the klr? 2) is a reasonably intelligent person going to be able to work on his carburetor and install a jet kit without screwing everything up? so far i've been able to adjust valves, and change tires and sprockets without catastrophe, but i've never done a darn thing to a carburetor in my life. advice? do i need special tools or training or equipment? thanks for the help. mw