Aluminum Radiator

grinding on the radiator its self or radiator support? I have a numbers matching 1970 Duster 340 4 speed so not interested in drilling radiator support. The adapter bushing? Is it needed for all hoses? I have a mild built 40 over 360 in the car now with a 727. I had it out today in 95 degree weather and it runs 192 if it idles in traffic.