I chatted with Mickey Dunlap over at 3WW and he does work on them still. I asked about my LT250s and the a 273cc kit is $350. Plus machining labor and probably valve work I am looking at probably $1K+ for the motor work. Plus I'd probably get it blasted and painted as the old coating on the engine is not that pretty anymore. I'll have to see how it runs this summer and decide what to do with the motor.