Freddy,
For stainless brake lines check out SSB, they can make and bend any type of brake lines you need.
http://www.stainlesssteelbrakes.com/
SSB was/is owned by Paul and Lauren Fix (Driving Ambitions Performance Driving school), the inside guy I used to deal with was Mark but it has been years.
I dumped those Jag brakes years ago and got the Wilwood Jag kit from CWI in CA. CWI specializes in Jag rears.
http://www.cwiinc.com/
BTW the Jag rears are Dana 44
Good luck,
RD