I've had very good success with Champion radiators, more so than with others (i.e. ECP and Be Cool). I have a 3 row (.75 each) Champion 26" on my 1970 Duster. The overall height and width fits just fine but I had to drill holes in the mounting flanges & a couple in the radiator support for it to fit. Not a big deal. I am using the Contour electric fans & Dakota Digital controller and it cools my 408 very well. The electric fans don't clear the fan pulley by much but it does. I am using the CVF Racing pulley small block setup (alternator only). It comes with the flat head fan pulley bolts and that is what helps it clear. Considering the same for the 512 big block setup in my 1972 Challenger because it does so well. Champion radiators have worked well for me. Not a big deal to drill a few holes if needed to make things work with electric fans. If trying to use a mech fan/shroud it would be a different decision because the clearances would be a lot more important.