hello Brian . that sure would be nice to have Nikasiled cylinder on a briggs flathead , i have one of the new COPPERHEAD 135cc engines by U.S MotorPower it has a coating like that , ( this engine is much inproved version of the older U,S-820) beefed up block redesigned ports PVL ign. rare earth magnet flywheel ,HR-191 tilly carb single ring dome piston , better cyl head new designed overhead pipe , I did race the briggs and tecumseh flathead OPENs for a long time . had lots of fun raceing them ! i still have some good opens ,also briggs stock apearings I just could not part with them Flatheads ! but when these Clones and other OHV came it , I have gone back to 2cycles less parts insted of more (rocker arms ,pushrods and such) i sure wish i had one of them BULLER Built 2 cycles ! heck i like all the karts and engines from all the eras , i still have some McCullochs from my 1st race kart. I got some 91 B-1 s runnin for fun. i wonder how much they charge to coat a briggs cylinder? lots of cycles have that Nikasil coating nowdays very good way to go for sure !