Hey fellow mega 2 stroke gurus! I want to get a thread started on these still-amazing bikes. I'm looking to do a front disc brake conversion and some cylinder work. I thought about sending the head away to have it ported and polished, but wondered if a YZ 490 would do the trick for less money. Lastly, I was curious if an extra Mikuni flatslide off of my 97 CR 500 would work for crisper throttle response? The boots line up and fit on both sides, throttle cable is good, just stuck on where to even start with the jetting. Thanks everyone for stopping by.