The seats that Knuckleduster has in his car have are the very rare and expensive Sport Seats (hence the aggressive bolsters), not very many around and highly sought after, hugely expensive in good condition.
The 944 seats that Joel posted are great, I have spent thousands of miles in these seats and are comfortable and really well designed. Having said that I really like the Recaro LXCs that you have in your car, if you decide to do the seat swap I will be interested.
As a reference I am 6'1" and 175lbs.
Yasin