440 Engine Knock

Howdy,
I hear a knock and the frequency makes me think it is a main bearing . Engine has 800 miles on a pretty Hot rebuild . I already started pulling the engine I would rather pull the engine and check the bottom end vs driving it and having it grenade . Plus its no fun driving it knowing something may be wrong.
Question
Would someone help me with a procedure to check Main and Rod bearings while I have it on the stand?
> I want to disassemble as LITTLE as possible
> I know how to assemble and engine , I know you have to return all caps to same journals,torque ect... I have Plastigage and all Indicators, calipers, dial indicators . ect..
> I am assuming all of the ARP bolts are toast once removed , Is this true
Thank You for ANY help
Go Dodge !!

I want to make it to Ohio with my 69 Dart in August, I have to get moving on this