So it's a crappy radiator? You can just tell? One bolt hole doesn't line up? Boo hoo! You should work on my '64Dog.
Nearly all holes are slotted, Nothing just drops together. Even just putting the trans tunnel cover on is a chore requiring prybars.

It is even money whether the new radiator or your existing radiator support are 1/16" off. Yet you get on your soapbox and start hollering. Shoddy part! Crappy radiator!


What kinds of ends are on your existing cooler lines? They are probably inverted flares. So you need to bridge the gap. That's where you go to class and learn about fittings. You need a male probably 1/4 NPT and the other end is probably inverted flare like used for fuel and brake lines.
Something that looks like this:
https://www.ebay.com/itm/GAR-48IC4X2-1-8-NPT-to-7-16-24-Inverted-Flare-1-4-Hard-Brake-Line-Brass-Adapter/261345327025?hash=item3cd96537b1:g:lKgAAOxy3NBSnPVt&vxp=mtr



I have found the largest assortment at Ace Hardware.

I can buy that exact radiator and have it delivered to my door for less than $100. Rockauto.com.

R.