installed new charger where FLA batteries were, new dc-dc, and removed wiring and fuses for 3 analog gauges I won't be using after upgrade... I would redesign rack to eliminate need for hood scoop and move controller/charger a little if designing for Lithium in the initial build. I think I can duct air from grill to controller, and skip the scoop 'next time'... even though it IS pretty cool. ;)