No fittings on my radiator for trans cooler lines???

[Kfort]

I'm converting my C20 from a manual Saginaw 3-spd to a 700r4. I don't see fittings on my stock 4 core radiator to run my tranny's cooler lines. Am I not seeing something? Can I modify my existing radiator or should I buy a new radiator with the fittings? My stock radiator works great with no leaks so I hesitate to buy a new if I can modify what I've got. It's not the price but seems like every time I buy a new part, it just never seems to fit/perform quite as well as factory. Whatcha' think?
Many thanks in advance. Advice from "The Forum" is always priceless.
*****I've added a Derale external transmission cooler 13"x13.5"x2" mounted in front and a temp gauge to monitor tranny temps but it's just not quite enough.