Will GM 200r4 work with factory floor shift location?

Finally finished hooking up all the wires to the trans temp gage. I have been wondering how hot my new 2004R has been running considering I am using a non-locking convertor. Tranny experts warn about how high trans fluid temps can kill your transmission. My 1800 stall convertor should have been slipping a lot driving around town at less than highway speeds. After I got the gage connected I drove around town for 25 minutes (98 degrees outside). I even made quite a few hard launches to get the tranny nice and hot. But it seems that no matter what I did it wouldn't go above 155 degrees. Of course I did use a HD trans fluid cooler in line with the radiator cooler so that must be why it's staying so cool. The charts say that anything below 175 degrees will allow your tranny fluid to last up to 100,000 miles without damage. I won't do that but it's nice to know that my tranny is running nice and cool even when I pound it a little.

Treblig