OK, I have a '70 SS 350 350 with factory A/C. Core support mount was rusted off under the battery. Found what I was told was a small block support but when I got it it has a big opening for the radiator. Tried to run it with my original radiator and couldn't keep it cool. Found another support but it must be for a 4 or 6 because it has no pan for the radiator to set in. Bought a new support that was to be for small block and it has big opening also. If I get a radiator that will fill the hole in the big block support what can I use for a shroud? This thing is driving me nuts. Got a new condenser and it don't fit for crap either. What has worked for you guys? Thanks for any help!!!