You don't say what year you have but looks like it may be 75. I have a 74 and put in a 26" and had a 22" originally. I had to make some new holes in the rad support and it's slightly blocked, because I don't want to cut the rad. support opening. I have, I believe a Champion CU499 and it works well.
Yes it's a 75. I was wondering what the difference is because all the aftermarket radiators I have found say for darts 67-72 I wonder what all changed with the support after 72? I will look up the champion I have looked at them before
