recore or new radiator? 70 dart slant/6

If you can get past the don't-like-aluminum issue, I put a Champion 22" small block radiator on my 66 slant. It required some creativity finding the right radiator hoses, but it works very well. The temp gauge does not move at all from the thermostat opening point no matter what the outside temps or how long I let it idle. I went that route because my stock radiator was smaller, and was going to be $350-400 to either recore or replace. I did the whole aluminum thing for less than $250, including an overflow bottle.