l have an 06 TC, and l need to move the drivers seat back farther then the tracks can go.. I am pushing the 6'5'' mark, and its really uncomfortable for me to drive in it, as l get a leg cramp extremely easy from being folded up like a pretzel. since a new car is not an option, the next alternative is to make this one work.
or, if l switched it with an after market seat, would that seat be able to give me more room?

This is illegal to move seat. It is a 187.00 equipment fine in Florida and you cannot drive until fixed or seat is installed by mechanic with approved seat which takes steel fabrication and new base ect. This will also void any warranty.