Good job on your tank. I used a chemical remover that got 80% and then lots of wet sanding. Be sure to insulate the bottom of the tank from the engine heat. On the relays, because my bike is a scrambler, I did not keep turn signals, horn, flasher, load shed,etc that were not essential, thereby freeing up space for the lithium. Very tight squeeze. Instead, you might mount a small box for a lithium where the stock.big battery sits, most folks won't notice it laying on its side, way easier than the relay box. Be very careful with cutting off your tank eyes, used a dremel.on mine