[JRW on PHP]

New member here.
Will be installing the Orion in our 2000 International 4700 DT466E stock 230hp 6 plus 1 transmission tow truck. Love the truck - just would be glad to pull hills a little better.
This is a well maintained truck that has approx 110k miles on it.
I have a full radiator/intercooler that we will be installing as soon as we can get time in our busy shop (to replace the half/half one) and a EGT gauge that we will also be installing (planning to install the probe in the down pipe just below the turbo) as well.
We have not replaced the HPOP or any other related parts (other than the high pressure braided lines) in the 6 1/2 years we've owned the truck.
Any recommendations on replacing any of these parts?
Really would like to keep this truck 100% reliable as it has been for us so far.
Thank you all!