12 Valve Cummins Hi Flow Performance Delivery Valve:eBay Motors (item 250422928188 end time May-18-09 12:55:29 PDT) a friend wants to install delivery valves and a 4 gsk kit into his 97 12 valve. has anyone ran these valves?? the mods done to truck are aurora 300 turbo,370 marine injectors, and home done pump mods= star wheel ,moved plate ect. the boy wants laser or hot rod valves but I am trying to confince his dad that with his mods and the boy being 17 that motor will no last long with a lot of fuel. what do you guys think?