I the most boost from my adr I ever saw in my old dodge was 30psi, but that was with a bhaf and 1/2" lines.

 

with the adr you wont need head studs but the higher the boost anything above 50psi u will need studs

 

My headgasket blew with 40psi it's all in the luck I guess. better to be safe than sorry

 

If you are terribly worried about putting studs in for higher boost, o-ring or fire-ring your head while you are at it. This will have that engine set for 85 PSI with o-ringing, and 135+PSI with fire-ringing. You will need a machine shop to machine the head to accept the o-ring or copper ring (fire-ring).