If you have an old comfortable car seat laying around and an old broken office chair...for about $20 in hardware, you can make your own custom office chair...
Here is a link to mine. The chair is from my 05 LGT...I had an old office chair with adjustable arm rests...with a little fumbling and experimenting...you can replace the old uncomfortable office chair with your fully adjustable LGT ones...
http://legacygt.com/forums/showthread.php/new-office-chair-201260.html
I wish the plastic surrounds went all the way around the seat, but depending whether you use the driver or passenger seat, that side will be bare...not bad looking though...
My issue is the height...I'm 5'6" and my legs dangle...I feel like a little kid getting in and out of the chair...I need to modify the bracket to lower the height down a bit...