How do i findout what is already on mine? I bought mine used and it has a heat exchanger that was already installed. is the a way i can findout if its single or dual? And if it is single what do i need to make it dual?

 

2 hoses coming out of the end plate is single pass
3 would make it a dual pass

 

Okay so im gonna need a new end plate and what else?

 

stock is 2 hoses, dual pass is 3 hoses. It would be very rare if you had a single pass because it is somewhat new to the market.