Garret is ablsolutely correct. If you want to hear it from the horse's mouth, however, give Bill Kondolay a call. He'll tell you the same thing. Measureing in the pan is not an true reading of the temp inside the torque converter. I beleive the last year for the sensor in the line is a '98. BUT you will also want to replace that last bit of rubber line (that has the check valve) with a braided line (That Bill K. sells). It is a very good quality line (with ANSI fittings) and since the check ball is removed, there is no danger of it getting stuck and over heating your transmission. The only draw-back to this is that when it is really cold outside, you may have to let the transmission sit in N for a few seconds before taking off (to warm up the fluid a bit)
Good luck.