Honestly i have no clue how big my cups where. The top ones where brislands and the bottoms where like 2" tall i believe. The only pictures i have of the set up are of the broken djm control arms sittin on the side of my house. The bottom cup was just a little above the control arm. Put the truck on a level surface up on jack stands all round..... no springs or shocks just the wheel and suspension arms. Mesure from where its gonna lay to the ground. Take that mesurment and jack the tire up that high so its like how it would lay out, then mesure how much you have from the top of the spring pocket to the control arm where the plate is gonna be. Take 3" outta that mesurement then you have your top cup. Hope that wasnt too confusing but hope it helped. Let me know if you didnt get that or have any other questions, Late