Thanks for the quick responses guys..
eyeballing the gas/oil mixture is what caused the seizure of my first engine(lesson learned on that one lol).. I know I could have bought a replacment engine only for cheaper but I wanted to be safe and have the extra parts so I got a whole nother kit. Here's the exact one I bought..
Grubee Race 80/66cc Silver SkyHawk Angle Fire Bicycle Engine Kit
also your right about the mirror butterbean. I used it for a day and couldn't see anything out of it lol. Then my bike tipped over and it snapped anyways lmao. As far as the speedo goes. I did a speed check with my moped and its accurate within 3mph which is good enough for me..
I'm also going to go with my old carb and make it a lot easier on my self..
My new kit should be here next Tuesday so ill post pics when she's up and running again.
Thanks for the support everyone!