Were you able to finish this project? I'm thinking of doing the same thing but have the same questions you had. How did everything turn out?My conversion project (FR to FX canister)has all been mocked up, but then mow season began, & I haven't had time to finish it off.
But I will.
https://www.lawnmowerforum.com/showthread.php/52096-Kawaaski-FR651V-FX-air-box-conversionWere you able to finish this project? I'm thinking of doing the same thing but have the same questions you had. How did everything turn out?