Radiator choices 26" or 22"

I was talking with the champion distributor today and he said $205.00 out the door to my door and said was a perfect fit. 3 cores and dual electric fans I think is the set up I may be looking for. But I have been doing some measuring to see what the options entail. But after 2 years of building this thing I just want to get it done and enjoy it. Cost and ease of install are looking pretty good from where I sit.