The 1.24" TB for E/B bodies ia rated at 425 # /inch. They were available from a company called California Moparts/Suspension back in the 80s... ahead of their time, unfortunately they went out-of-business.
FF can make 1.20, 1.22, 1.24 upon speacial request... check with them... last I knew (~1-year ago) they had some 1.22 aside from a small production run.
Even at 425 # /inch, these are not as stiff as you might think. The factory Dodge/Plymouth TransAm cars used larger TBs in their race cars.... ~1.45 diamter (makes the 1.24 pretty small and weak by comparison).
The factory ABE hex openings are 1.25, thus, 1.24 is largest to fit ... unless changing the hex opening to a larger one, such as C-body or truck size.
Mopar Mitch
"Road racers and autocrossers go in deeper and come out harder!"... and rain never stops us from having fun with our cars... in fact, it makes us better drivers!
Check out MOPAR ACTION MAGAZINE, August 2006 issue for feature article and specs on my autocross T/A!
