Thank you for all your suggestions and help. My radiator is currently a 2 core. My newest question is - should I continue with a 2 core or go to a 3 core? I do not have AC or power steering, and it is a manual transmission. I am clueless about the differences regarding the number of cores needed. Thank you in advance.
There still are a lot of questions you probably know the answer to:
Do you want to keep stock appearance and stock fan/shroud?
Do you want better cooling or was stock size good enough, since you don't even have a/c?
If you go with a stock replacement type with brass cores, you won't find cores larger than 5/8" because brass is too weak to make it 1" like an aluminum ACP, Griffin or Ron Davis. Tests show that 2 cores 1" wide cool better than 3 or 4 little 5/8" cores, lots of theories behind the heat transfer, flow, etc.
I went with a big-block sized Wizard Cooling radiator that has two 1.25" cores and dual Spal brushless (variable speed) fans because I drive in stop-and-go city traffic a lot with a/c. It's got an aftermarket look so even painted black, which I'd never do, it'll still not look stock.
Don't just jump on the electric fan train because most cool worse than the proper mechanical fan and shroud. What's funny is Champion/Northern Radiators are the cheapest radiators out there, with the least expensive epoxy sealed core (as opposed to welded), but I see SO many builders using them, and some are pretty high dollar projects. Kinda blows me away. They say their warranty dept is good too, but I'd rather spend a little more and not have to use the warranty.....