I first want to thank you for this web site.  The information I've found here is priceless.  I couldn't be doing what I'm doing to my MJ without this site and everyone's guidance. 
  
I need guidance on my disc brake conversion for my '88 MJ.  Its an 8.25 from a '98 Cherokee with disc brakes from a '94 Grand Cherokee...... 
  
In my pick and pulling of parts, I failed to get the vin number off the '94 Jeep Grand Cherokee donor.  It never dawned on me to get that information......  Now I don't know what pads I can use for the back.........  Whats with this "to Chassis Vin 358321" or "from Chassis Vin 358321" stuff for choosing disc pads?  I know they're dimensionally different with the first Vin pads being 5-33/64lg x .201 plate while the second Vin pads is 5.64lg x .197 plate.  Its not much difference but does it really matter which set of pads I use?  God bless him, but I know the counter jockey at the local parts store won't be able to help me. 
  
I plan on posting pics of my progress in the coming months. 
Thanks for the help!