It would depend on the year of the A. 30-31 has more room than its 28-29 brothers. Both have slightly more than the T's.
The '26/'27 Ford couple is tight and the '28/'29 isn't much better. If, 5'8" or less a coupe in these years would be OK. If, your over 5'8" or more a sedan would be much better, you can always push the seat back. As, you go up in years the room gets better a '30/'31 is bigger, being 6' I fit in the 30 coupe just fine. CRUISER
,I have both an A and a 27 T coupe The A has a little more room i think.Don't plan on chopping the top on the T , I could be wrong...........PINCHER
Depending on a few things like firewall, channel, and chop the '27-'29 is about the same. '30-31's have a little more, maybe a couple of inches.
the question is more about foot room. leg room on these cars can be adjusted with seat placement and height but if you are running three pedals the T has a lot less foot room.
Stock they are pretty close for leg room. You can squeek about 5 more inches of leg room out of an A by eliminating the rear shelf and moving the seat back. Also the "T" is a bit narrower. As noted, be careful about chopping and channeling either one. Make double sure you'll fit in it. I have three friends right now who hate to drive their rods because they are so darn cramped. Damn shame 'cause they're sweet looking rides and they put a ton of work into them.