How Do You Tell If You Have Big Or Small Bearing 9 Inch?pull The Tire?,measure What?also I Want To Go With 4.88 Gears The D44 In The Front Now Has 350 I Have Another Axle With I Think 4.10 On The Ring It Say 45 11.can I Use The Carrier From The 4.10.inthe Rear I Want To Go With 31 Spline With A Spool But Dont Know What To Order