im in progress of building up my mower ,note this is my first build, i have a 4.5 in pulley welded on the transaxle (it was on there when i got this transaxle) my idea is to put a stock transaxle pulley on the front its a 9 inch pulley. my mower chassis is a murray widebody and i know ill have to do fab work on the chassis to accommodate the larger pulley. will this work and how much of a speed increase will this bring? im from south carolina also.