Thanks, gang
Yeah, it's a Raleigh Competition, my dad bought it new. I got the potentially bad info while I've been out here in California, and the bike's in sweet home Alabama, so I won't see it for a couple more months. No big deal if it won't fit, I'll just use a smaller crank.
One reason I like the old bikes is I could always use, for instance, Simplex DT shifters, Campy FD, Suntour RD, Regina FW, and mix and match as appropriate. Sure can't do that with modern components!

Have a good ride,
Don