im in texas, and ride mostly backroads, but when i get muddy its nasty. if you want a real mud tire dont jack around with mudlite or xtr, get an outlaw and keep the stock tires for workin. the outlaws are a little pricey, but are the best mud tire (i've had them all) and they just introduced an all new 29.5 outlaw that will not dissapoint. if you insist on a lite weight all terrain tire, go with a 30" mudlite xxl. they use a harder compound then they use to becouse of poeple getting flats to easy, the 30's still ride smooth, but the lugs are spaced farther apart and are almost 1 1/4 deep, a very good tire for dual purpose riding. on the diff breathers, i wouldnt. unless you doing high speed runs for miles and miles i dont think they are needed, just run the proper amount of fluid, 9oz. and keep the bellows to insure water and mud stay out. also, pull the axles and kock off the dust covers, mud and grass packs in there and kills the axle seal. if you run deep enough to need snorkels dont forget to seal up the stupid duckbill thing in the intake, alot of motor have been swamped becouse of those little dudes. and like said before, some pvc pipe, and a hand full of 45's and 90's and rubber couplers and rock out with some pluming. i think you can slide a 2" pvc in the factory rubber boot on the belt housind and clamp it, that how ive done the last 2. slide the pipe in there and clamp it, then its as simple as running them to where you want them. just mock them up before you glue them. also, if you going that deep diectric greese is your friend. in every connection, from spark plug to headlights, including your fuse box, lid and underneath where the wires come in.
i know i rambled on a bit, but trust me ive been there. more then once.