So, after much debating with both myself and others, I've dropped the idea of using the stock tank and fuel siphoning setup. Along the way, I've learned an incredible amount about how the original system works, and I'm pretty thoroughly convinced that it is incompatable with a high-flow fuel system. *sigh* So, the Supra pump is going to eventually make it's way to the Laser, and two Bosch 0-580-254-044 fuel pumps are on their way from Jay Racing as a substitute. The reason for two pumps? I'm going to replace the 950 cc/min injectors I was planning on using originally with 1600 cc/min injectors, and most of my fuel lines are bumping up a size to -10AN, all in preparation for what I might do with the car next season. As the car sits now, the fuel tank is almost out of the car (just need to disconnect the filler line; as a point of note, it would probably be a lot easier to remove the tank if you dropped the rear subframe first, instead of trying to leave it in like I did), and the current plan is to see if one or two cells can fit nicely in the stock location. If they can, I'll go that route, since it both allows me to use the stock filler port, and keeps the weight of the fuel as close to the ground and the center of the car as possible.
I've also been pulling out interior pieces in the back of the car, along with the stock 6-disc CD changer, to make room for the battery relocation; I'll be running the battery about as far to the rear of the car as you can get, all the way to the passenger side, mounted in (probably) a Moroso battery box (so I can remain NHRA-legal). I'll also need to rig up a rear-mounted battery cut-off switch, which I think I can squeeze behind the license plate bracket so people don't mess with my car day-to-day. ;-)
Still to be done: get a BUNCH of parts ordered, mock up the FMIC, and get some dimensional measurements for the oil cooler location. I should also get the Accusump mounted up as well, just to knock that off the list. It's going to be another long weekend... :-)