Radiator choices 26" or 22"

Okay, we are making progress on the duster. Should have it up and driving very soon. Putting in the roll cage now, using the pics J pair posted of his to go by, as well of course as the NHRA guidelines. Thanks for the pics Jpar. Next I am getting ready to buy a radiator for it. I know the guys like Ron Davis, be cool and others make the best. But the budget is in the $200-$300 range. I know a 22" is a drop in fit basically. What does it take to fit the 26" in. 73 duster 400 bb, top hose left, bottom hose right. Also, opinions on dual electric or mechanical fan? I've read the past posts and arguments. But times and opinions change and I want to know what's working best now in my price range. Cause Ron Davis wanted $1400. Which as much as I would love to have it, got to feed the kids too.