Super Jet Water box fitting size

[Sanoman]

Can someone tell me what the size is of the entry and exit pipes on the rn sj waterbox .ls it 2" or 2.25?

 

[Cannibal]

Stock RN waterbox is closer to 2 3/8" OD.

 

[Sanoman]

Thanks! l have an XS waterbox that has 2.50 in and out OD.Thinking about trading for a stock rn sj water box.l like this box,but it is too loud.Did l get old....