Water pump bolts

[Blackrifle]

Hope to replace the water pump and flush out the cooling system in my Barn find 66 Newport in the next day or 2. Would like to change out the bolts.
What should size am I gonna need?
Thanks in advance

 

[FURYGT]

Mega Parts likely has them.

 

[CBODY67]

Soak them with penetrating oil and also tap the bolt heads with a hammer, then soak some more. Might not need new bolts.

CBODY67

 

[Blackrifle]

What thread and length are they?

 

[Gerald Morris]

What thread and length are they?

3/8-16 thread. You'll need custom lengths man. Get stuff MADE FOR MOPAR B/RB engines. DON'T PLAY W THIS STUFF!