I haven't sat in a sports seat but I can tell you the base of the power seat is rather flat too. Last summer I was going to take the bolts out of the front of the seat and throw a 1/4" stack of washers under it to jack it up but I discovered Porsche didn't use a std 6-sided bolt. It had some torx looking head on it (and I mean the head was the male portion not the female part of the torx). Suppose I'll have to buy unique set of sockets for this to go along with my hex, torx, metric, and American sockets. Oh well, it's not a project unless you have to buy a new tool.
