Bike build lost a friend to cancer 2011 kx250f big bore kit

My friend past away in 2014 he had a 2011 kx250f and he rode it twice he put filter in backwards and blew up motor , I bought the bike from his mom to help her out with the mortgage, I’ve been struggling to keep this going but I’m close, the new crank and rod are all pressed in and I need cylinder and piston big bore 269cc to assemble this if you have one for sale please contact me 805-276-4911 or would like to donate a part or sticker because I will finish this and race it for his mother, I have purchased over 3,000$ in parts already and had procurcuit donate a pipe , appreciate you taking the time to read this