I have an 2004 Foreman 450ES with all power mods,snorkeled,jetting Ids exaust,KN filter etc... I noticed a big power loss with 28 mudzillas(still turns them).Im thinking about either a big bore kit with head work or just buy a new foreman and start over.I love my 450,but the mods i need come stock on the new foreman(CCs,Disc Brakes)Can someone please let me know all advantages of the new foreman 500s.I 80% ride in swamps and thick mud(nothing against other hondas,foreman only)Thanks guys for the help,always looking for new riders in Davie,Ft.Laud area... I HAVE A SET OF 28x10x12 and 28x12x12 MUDBUGS 4 SALE(USED 1 TIME ONLY FOR 2 HOURS) 200.00 ONLYCOME GET THEM AT I-75AND US 27 AREA(BROWARD COUNTY)