In the 90's I bought a cheapo $225.00 GER convertor and ran it for a couple of years and everybody told me to buy a good convertor. I bought a Coan Race convertor that they recommended for $600.00 and my car slowed down over a tenth in the 1/8. I will never buy a Coan convertor again. I wasted that $600.00, should have kept the other junk convertor in it.