The intake you have is a trailbikes kit https://www.ombwarehouse.com/26mm-performance-carb-kit-mikuni-vm26-01-current-models.html?gclid=EAIaIQobChMImM3emevv3AIVkksNCh0R9gpSEAkYASABEgKsVPD_BwE. The carb is a mikuni VM26-606. The point of the long intake is to let the chocke plunger clear on that carb. I have run that setup before and it does ok, I prefer the kitaco VM26 setup though. You can run the oem exhaust heat shield on that exhaust and will save you some burnt legs. I am not concerned with the lack of spacer between that intake and the head as what you are trying to prevent temperature to is the carburetor, and that is isolated with the rubber boot. That intake actually runs cool with the engine running. People have commented about that type of filter and I agree am not a fan. a nice foam uni pod filter with a prefilter on it will work out just fine. You can make a mudflap for the rear to help keep things clean if youd like, that's what I use my stock airbox for only. the oem airbox will not work with the intake and carb you have on there as is. If it was me, I would change the filter only and run it and have fun. Just clean and service the bike as needed.