If things don't have to look stock, the best coils I've used are the early '90s F150 epoxy-filled units.
Local auto parts should have them under $40 - or spend double that for MSD red paint.
They use a pigtail - also sold at auto parts stores, about $8 - and use an HEI terminal, so you'll need a matching coil wire for a few bucks more.
I fab a small mounting bracket for them from aluminum angle stock.
Best coils I've used, and can be mounted in any orientation you like.

For stock-appearing street cars, I use the restoration coils, and they work fine with the (hidden) orange boxes & OEM ballasts.