i got an 03 sd and i swapped suspensions with a buddy of mine, everything worked out great. he gave me his "lift kit" suspension and i gave him my leveling kit w/ 350 blocks for the rear. he said it is a 6 inch kit but the problem is, it seems higher than 6, it might be an 8. how can i tell? what should i measure so when i buy tires i know im not getting ones to small, i dont want 8in and 35s or 6in and 38s. sn: