I want to put a set of Aaen pipes on a 05 viper - Aaen tech said I will need a head or do head work to make them work with the DCS or remove the DCS. (For riding at lower elevation - 1200 to 2500 ft) The only aftermarket head I can find is from MPI and they won't ship to Canada unless the order is $1000 or more. Is their any other suppliers in Canada or the States that will ship to Canada.