Originally posted by baxsom
this is the response i got from hahn when i asked them the same question Minor modification is needed to the valve cover, and you will have to get a lengthened EGR pipe. You can still use the EGR system, but once the spacer plate is installed the EGR tube becomes too short. Please call us to discuss. 630-553-6830 Thanks Sales so even their techs say you have to weld a piece in yet their website says that it installed with simple hand tools i guess in their defense you do hold a welder with your hands

lol... that would be false pretenses and false advertising... but whos keeping tabs?
;)
At least they are working for the 420a
Nick
97RS