what the crap are these?!?!

[ProKiller]

I need to know what ratio roller rockers i have, so i popped off the valve covers and this is what i see.

CraneCams on the top side, F3ZE-6529-AB is on the other side. and there is a tiny ford emblem on them. They are stud mount. really could use some help.

 

[8950HO]

I need to know what ratio roller rockers i have, so i popped off the valve covers and this is what i see.

CraneCams on the top side, F3ZE-6529-AB is on the other side. and there is a tiny ford emblem on them. They are stud mount. really could use some help.

The part number you give is the same Ford part number that`s on my Crane "cobra" 1.7 ratio bolt down pedestal mount roller rockers.These came stock on the 1993,5.0L Mustang Cobra`s.
Seems strange if their stud mount???