Champion radiators are horrible radiators. Yeah they may last you a year or so if you don't drive your Ratsun regularly, but If you rally cross, auto cross, or just like taking spirited drives you will soon disappointed. Mine started leaking at the poor welds with in 4 months. Yes they are affordable but are cheaply made. Have a radiator shop recore or fix any problems you may have with your Datsun rad. It may be the same price. A recore as I'm sure you all know is much more expensive, but we'll worth the $$. I do business with Superior Radiator & Air conditioning out of Oregon Coty, Oregon when I need something fixed on a rad or a heater core. Extremely fair prices, quick turnaround and Randy is a hell of a nice guy that knows what he's doing. In fact I dropped off an old 510 rad today to have some seems fixed, they decided to go on me this morning. Hope that helps.