Lt1 Intake question
 

I have a 95 LT1 out of a caprice police car and the oil has started to leak out of the back of the motor. I am wondering if it is the intake or the rear seal. I have already put some RTV gasket sealer on the back of the intake where the guys pulled the motor for me. So I'm wondering if anyone has had the intake to leak on their motor. Also it idles kinda rough when cold and really doesn't like to run until its warm. Could this be part of the problem too?