Need advice B4 I take a ride on new rallys

[socalkevin68]

Hi guys..dumb question i guess..but really would ease my mind b4 i take a ride with my new Rally rims on..
I have a 68 c10....has 6 lugs all the way around..I bought 4 new rally steel wheels 6 lug...and noticed the p/o had put on 1/2 lug studs..(suppose to have 7/16 i think)....Anyhow..the rims go on ok..and the lug nuts seems to snug down nice and even and tight...
I'm just a little nervous because its suppose to have the 7/16" studs on it.
Is this safe...is this ok.......can i take a ride without worrying about it...
thx in adv......