Need to get ARP rocker studs for my EQ320 heads. I'm setting them up with Comp Camp Ultra Pro Magnum rockers 1820-16 and a Comp Cams stud girdle 4035.

Question is how long of a stud do I need to work properly and hopefully fit under the stock 525SC covers?

What ARP rocker studs do I need :
ARP # 135-7101. That are 1.75" effective length
https://www.allensfasteners.com/deta...D=ARP-135-7101

Or

​​​​​​ARP # 100-7101 that are 1.9" effective length.
https://www.allensfasteners.com/deta...D=ARP-100-7101

Or

ARP # 135-7102 that are 2.35" effective length.
https://www.allensfasteners.com/deta...D=ARP-135-7202