Sounds right to me. For the Centerlines you need the .5" shank (welds take the 1.3" shank), and for a Ford you neex 1/2x20 threads...which also looks right. Open end or closed end depends on long studs or not.
i bought all 4 convo pros for my car last summer..freakin sweet looking wheels man..real boss...we actually had a huge problem with the lug nuts dude..i dont remember any part numbers..but i know that summit or jegs did not have any Closed end that fit my car..i have a 1990...they sent some that were suppose to fit but didnt fit at all..too short i think i forget..what we actually had to end up doing, it grinding down the studs on the axle it selve alittle so the nuts would fit on...its been so long ago so i dont remember what the issue is..but just be very careful and look into this...u dont want a rim flyin off or wobblin!!