For the fuel cell in Tom’s RX7, we were concerned about being able to pick up fuel when cornering. The fuel pick-up is in one corner of the tank so any slosh will uncover it.
After some research, I found these Walbro fuel pucks designed for snowmobiles. They come in a few varieties: single connection double connection and a right angle connection. Some come with vent holes.
One of my favorite upgrades to my XJ has been the LED lights. They really light up road signs and anything reflective like stripes on the road or center reflectors. They also work great in the fog and rain.