My 69 Bee came with a 22 inch rad and actually did pretty good with the 440 I transplanted(440/030 over) but I installed a champion alum rad with shroud and 7 blade clutch fan. Started with a 160 stat but it cools so well I'm going to a 180. The 22 inch opening just barely covers a small portion of the fins...so that is not an issue with 22 vs 26.

I have champion rads on both My cars and they are cheap and they do the job.

pic of My 67 clone...can send Bee pics if needed