Have you thought about doing the tranny yourself? They are one of the easisest to learn on. There are some good step by step books out there to help you, if you decide not to do it yourself, try to go to an independent shop who has been in business awhile or has done some high performance work. They usually are willing to talk and tell you the straight scoop. For a street machine, a good stock rebuild will probably work just fine. TCI makes a good converter for mild engines at a good price, I have used them in racing also, plus several others such as Neil Chance, PTC, B&M and some local builders. Be sure and give them all the info on the car, engine, rear end, cam specs etc. They will all ask for it and some have internet spec sheets you can fill out. There are some people who can spend upwards of a grand on a converter and then find out there engines torque curve won't stall it at 5000rpm or whatever the converter is rated at. Like I said before, talk to the reliable people and they can pretty much tell you which one will work the best on your application. If you need more info email me and I will be glad to help.