I would suggest calling a reputable converter company and telling them what you have and what you want. The converter is perhaps the single most important big purchase for your car. A good company can make a converter that can flash on demand to a given RPM for your application, while still providing adequate lockup to keep extra heat to a minimum and not kill mileage too bad. To me, it's more important to get a GOOD converter for a street car, because you want some semblance of efficiency and economy. Expect to spend at least close to 400.
