And is there a difference in fuel hoses like gas or diesel rated

I just went to my local parts store and matched them up with o rings out of their bulk assortment. Cost me 50 cents a piece. As far as I know their's nothing special about those o rings.
Ssdieselsupply also sells a kit if you want to pay $13 + s & h for two orings.

Nah I'll just match em up are the fuel lines a headache to change out I was gonna do the ftb mod but no drill it tap tools

The fuel heater o-ring is a square cut o-ring.

I'm probably just gonna order it from ss diesel and the hd filter I have a new injector set waiting to go in so I'm just gonna get it all in at once. Then I'm gonna get ss diesel intake diamond eye crossover 3" downpipe and a full 4" exhaust maybe up the boost a few psi then the body needs attention until this motor goes

Could be wrong but I don't think Diamond Eye makes a crossover-they do make the downpipe and rest of the exhaust at a good price for the kit.

http://www.diamondeyeperformance.com/featured.php

2.5" cross over Ss diesel supply sells a 2.25"

Great to see they added it to their inventory.
Must be fairly recent?
For the longest time the crossover was not available from them.

I don't buy anything from SS Diesel,all reports about customer service I have read say they have none after the sale.