Hi currently looking for jet bodys and parts for an inground spa I am building (walls almost done) But I am confused when it comes to the diagrams offered for Waterway parts. Looking at the diagram here... http://www.poolandspa.com/catalog/product004263000492.cfm ... can someone tell me which parts I need after the jet body, lower one in the diagram. The wall of my spa are approx 6 inches thick taking into account tiling etc. If you can tell me the numbers as shown on the diagram it would help. This is so difficult not being able to get 'hands on' to see how they assemble. Basically do I need parts 4 and 6 as shown along with 6 and 7 then the jets. Or are 4/5 and 6/7 seperate options?

Thanks in advance