if you look at the that truck it has 5 HAND HOLE RIMS(ONLY ON 1.5 TON)FIVE LUG FRONT(ONLY ON 1.5 TON).THIS IS A HEAVY SPEC TRUCK(1.5TON).ALL18" AND19.5" WERE HO72 REARS.tHAT WAS THE ONLY REAR USED IN THESE TRUCKS.ALL OF MINE HAVE THE HO72 REARS.SINCE THE RACE TRUCK WAS GIVEN A FRESH REAR WITH ALL HANDMADE INTERNALS,WE DID NOT WANT TO CHANGE IT SINCE BIG MONEY WAS PUT IN TO IT.WE YHOUGHT SINCE GRIGG WAS A MACHINEST AND SEEMS TO KNOW ALOT ABOUT THESE TRUCKS AND HIS PRIVY OF KNOWLEDGE ON ADAPTERS,HE WOULD KNOW ABOUT ADAPTERS.AND SINCE THIS FORUM IS ON TON OR MORE TRUCKS,ITHOUGHT SOMEONE ELSE WOULD BE HIP ON THE R-SERIES TRUCKS BUT I GUESS ME AND MR.CORNAGILLA ARE THE ONLY ONES WITH THESE TRUCKS.DID YOU EVER SEE 16" 5(FIVE) HAND HOLE RIMS......EVER!NEVER WERE MADE....NEVER!IF YOU TAKE HIS PICTURE SAVE IT ON YOUR PICTURES ,THEN ZOOM IN YOU WILL SEE 10 LUGS REAR AND FIVE FRONT.
