the rad support might be different, it was in several of the c60's i took apart. it might be made to work but the c60 ones were taller and i remember thinking at the time they wouldn't work for a c10/c20. i have not took apart a c50. the running board section will unbolt from the fender so most if not all of the mounting holes for it are same as c10/c20 for the fenders. the inner fenders are the same too i think. are you sure you are prepared for the wide flares sticking out?? i have to admit it might look cool. i thought about it too but finding ones in good shape were tough so i ended up selling them for more than you could buy c10's for.