However, there are guys out there willing to pay for the A body spindles while others give away the FJM spindles.
this right here. sell off the A-body spindles and use the money toward your brake choice.
the debate on which spindle is best and the supposed pitfalls of the FMJ spindle has been ongoing since i joined here years ago.
i have done dozens of conversions with the FMJ spindles, as well as several with the A-body ones, and i couldn't tell a lick of difference.
no upper balljoint "overextension" either, contrary to the popular magazine article, "disco-tech".