I WAS LOOKING AT THE MAY 2000 OF FOURWHEELER AND IT SHOWS THE FF FOR THE 12 BOLT AND SINCE I PUT GEARS AND A DETRIOT I GUESS I SHOULD GO FOR IT SINCE TO ME IVE PUT TO MUCH MONEY INTO THEM TO GO BACK AND GET A 14BOLT AND IM ONLY GONNA RUN 35 INCH SWAMPERS MY QUESTION IS HOW MUCH IS IT AND DO I HAVE TO ENLARGE THE CENTER HOLE ON MY WHEELS TO ALLOW THE LOCKING HUB TO GO THROUGH I ALSO WENT INTO OFFROADDESIGN.COM BUT THE SECTION ON THE FF IS NOT WORKING SO I CANT GET A PRICE SOMEONE HELP THANX CHECK US OUT AT JIMJIM.COLORADOK5.COM MINE IS THE 75 JIMMY