Ok, well I finally got my seat down. It wasnt easy. The lever had come out from its latch and the cable on the left side had broke. Only releasing one side of the seat and keeping it from folding (down or up). Basically i had to take all my stereo stuff out of my hatch area, or boot for those who live in europe (like to refer to it). I had amp's mounted to the back seat, which i moved into the little space between the seat and the tire well to take stress off the seat.
Anyhow, basically I had to take out the styrofoam from this area where I mounted my amps to get to the bolts at the bottom of the seat. This area is where most people put 6" or 8" subs to stay as close to stock as possible. There were three screws at the bottom that i took out and pulled the carpeted back cover off the bench seat. Inside i found the poblem with the seat as mentioned above. This is a lot easier to do if the seat is folded down. I did have to cut two slices in the styrofoam because there are two cables going down into the gas tank. I ran the cable thru the slits in the styrofoam and just pulled the whole piece out. The angle on the screws to the seat were a little tough to get at but i used a short phillips screw driver. I also used these pages from the Supra manual to help guide me in doing this process. http://www.mkiv.com/main/index.html under specifications--repair manual--Rear Seat Replacement.
I thought i would just post my experience as a follow up on my original post, just in case there were others out there that have ran into the same problem. Thanks to those who responded to my post, most appreciated. Anyone has any questions about this process with the seat or any custome stereo problems they can email me.
~Chad