Edelbrock Intake Issue

Those billet t stat housings have an “O” ring seal instead of the standard flat oe gasket. is the o ring intact/ok?
Do you have the right size t stat? There are 2 sizes of t stats for sb mopar. If you have the larger t stat it wouldn't allow the housing to sit flush inside the housing and therefore not flat on the intake causing a leak.
Cant see the unused bolt holes going through to the coolant passage but stranger things have happened.
Btw. I am pretty sure the double bolt holes are for a/c cars and allow you to turn the housing & upper rad hose away from the a/c crap for clearance.
I have the same intake in the garage and will double check if the bolt holes go through to a coolant passage.