<!-- QUOTE --><center><hr width="90%"></center><blockquote><i>Quote from sparetire</i> <b>The AWD GSX is faster off the line than the GST. At top speed, there is a slight advantage to the GST due to reduced weight, but it is a small diff. </b></blockquote><center><hr width="90%"></center><!-- END QUOTE --> It's not so much about reduced weight as it is about parasitic driveline losses due to the AWD mechanism. That's a lot of friction going on there, which just eats up hp like crazy. Witness the Nissan Skylines with 1300 hp, but can do no better than 215 mph.