Hmm. Your headers don't look like mine. I have small block early A TTI. Call Sam at TTI and find out what's up.
Stupid question but I assume you tried clocking in all directions with no luck?
I can't speak to the longevity as I have less than 100 starts on mine but if it does break you can easily buy replacements parts for a reasonable price. Good luck.
This starter will clock to fit any application. I've tried them all and this the best for TTI on an early abody.
http://www.robbmcperformance.com/products/mopar_starter.html