Xtreme Mower Mayhem

hi this is my first mower build. i am looking for any and all the info and tips i can get to help me make this build go smooth. ive alway been into mowers and have been wanting to build me a monster mower for a long time. i have bought a mower to get started. its a murray 18/42. it has a twin 2 18 horse motor that runs andits a really good mower. i am looking for tips on steering, pully sizes, sprocket ratios, and any other tips i can get. im going for speed and i and building it to go mudding and to drive in the river. any and all tip with be very much helpfull thank you

go down and look at my post about halfway down the page

http://www.xtrememowermayhem.com/apps/forums/topics/show/1913052-pulley-size

thank that gives me a basic idea