That could be bolted on as well, but I recommend welding it. The battery box goes underneath the rear of the engine where the exhaust crossover plenum originally went. The stock exhaust collector WILL NOT work with this battery box.This is a "builders" kit that requires a little bit of mechanical inclination. THIS KIT INCLUDES AN EX650 REAR SHOCK AND TRADITIONAL BOBBER SEAT. Although, you could easily adapt a cafe seat on it. Until I can get the updated kit finished, I will be happy to walk someone through the mounting process if needed.
Feel free to ask questions. The item "CX500 Cafe Racer, Bobber Kit" is in sale since Saturday, January 25, 2020. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Body & Frame\Frames". The seller is "daniel6419" and is located in Hope Mills, North Carolina.
This item can be shipped worldwide.C