How much difference will a new converter make

It would seem like alot of people spend their attention to the engine & gears, then wonder why the guy on a bicycle 60 footed better than you. The best thing to do is call any one of the major convertor companies to get a recommendation, get ready to spend some money. A cheap convertor is like a cheap doctor, lawyer, ETC. You will be in for a big suprise the first time you drive it with a good convertor! Every system in the car needs to work together IE, engine - transmission - convertor - rear axle - frt & rr suspension - tires.