Call Paul at T.C.S. Well versed in the HP game, and won't steer you wrong. He used to own a HP engine shop and at one time was a crew chief on a pro-mod car. T.C.S. warranties their converters, something most others DO NOT. Another plus, is you'll be buying in Canadian Dollars, NOT US. dollars. Shipping is also in Canadian Funds. T.C.S. phone number is 1-800-960-1177.