after about 6 months of planning and one test car, i finaly got my rear disks on. i used the small daytona disks, had them machined for the j-body hub, and it made it a true bolt on deal.
the machined backing plate. 92 beretta parking brake cables were used as they are 1" longer per side and are needed, unless you want to modify the cable mounting points on the axle.
the brake hoses. i used teflon core stainless braided line with the apropriate -3 ends. i used 10mm x 1.0 bevel flare to -3 adaptors on the body side. others say to use 3/8x24 inverted flare, however they do not work as out cars use metric fittings. also shown is the 7/16 to -3 banjo bolt adaptors for the calipers.
http://memimage.cardomain.net/member_images/5/web/2405000-2405999/2405651_35_full.jpg
the end result. the calipers are mounted low on the back because of the way the parking brake cable exits the backing plate. there is no real downside to this, the only thing is it may not be astheticly pleasing. as for performance, it stops a little better, but not a huge amount of difference. the biggest difference is no brake fade, and very easy to service. a master cylender with a larger bore and an adjustable proportioning valve would work wonders with this setup.