"Normal" is intercooler temp on left, boost on right, at least on the S/C 99+ models. A fuel pressure gauge was not offered AFAIK. I added one to mine, it's in a pillar mount.
In my S351 the boost is on the left and fuel on the right. I think most have the boost on the left (closer to driver).
Not all Saleens are created equal though. It really only matters where you want them to be.
Damn, I looked over the weekend and you guys are right... boost on left, I/C temp on the right. I stand corrected... Gotta get the car out of the garage and drive it more