No I have 4 of the 6Volt gel cells they measure about 1-1/2" X 4" X 6-1/2" they are out of a back up power supply.
I am thinking the frame will be open, but I seen a bike on here with the aluminum side panels and kinda liked it
The heat is one of the reasons I left the Exhaust 4 into 2, two tubes = more surface area = loose more heat. I had, at first, planed on making the piece from the swing are up and out the rear a rectangle tube, so it would be 4 into 1.
I have read in more than one place it has been shown on a dyno that their is no real HP gain on the 550's with a 4 into 1 over a well built 4 into 2, we will just have to wait and see how well I have done.
I am not even sure I am going to have an on board starter?