Yup, use the 8.75. True the 741 has a smaller pinion. Apparently, though, unless you have a super monster motor and run slicks, the 741 is plenty tough for most applications. Hum, I think I recall that Don D. has a 741 behind the '63's Old Reliable. Don? Thanks, Gary H. Ben Jr. Morgan wrote: ... If your rear end says 742 on it, then I don't think that there's a reason to worry, I haven't broken mine on the track, and I'm relentless on the light, if any body would break it, it would be me. Beware of the 741s though, they have a smaller pinion and are much more likely to break.... ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html. This email was sent to: arc.6265@xxxxxxxxxxxxxx bSONJP. Or send an email to: 1962to1965mopars-unsubscribe@