Ordered My Disc Brake Conversion Kit

The pirate jack kit is just a 73+ BBP Mopar disk conversion with the rotors drilled for the SBP.

Which is fine, except the hub bore is larger than will fit most OE SBP rims, and of course the track width increases as well. They also list the lug size as 1/2", so, not the standard 7/16" SBP studs either. So, there's a decent chance you'll have to buy new rims anyway if you've got SBP drums with stock wheels now.

There's also the issue of buying rotors should you ever need to replace them. If pirate jack is still around great, if not you'll have to buy 73+ rotors and have the 5x4 pattern added.