Stock LS truck accessories will clear any stock fitting rad no problem. Check out my build page. LS in a 49 GMC. Very easy. Use a straight thermostat housing to make life easy. Only real “mod” to fit anything on mine was I had to notch the inner fender to get heater hose clearance…… but my engine is also offset to pass side for steering box clearance. I also run AC. Love the whole setup.
