First, you do realize that this isn't a lockup converter like the converter that came in your car, right? Without lockup, you will lose mileage at highway speeds. Plus lack MPH at the track when racing. Big time.
http://www.bmracing.com/PRODUCTS/HoleShot
http://www.bmracing.com/PRODUCTS/Hol...0-4R-27-spline
For the price charged for these, you can probably get a
lockup unit from a TR vendor that will do all this does, and more. Probably be stronger, too.
http://www.ckperformance.com/resourc...ONVERTERS.html
http://www.patsperformanceconverter....ucts.asp?cat=9
or Dan's Converters, Inc. (618) 498-8860 / (618) 972-4670. I used a 3000 lockup from the latter with a TA49 for many years with great results.