Hi,
I can't help for problem 1 as I haven't done my rear uprights myself but bought them from Talonmotorsport.
Regarding problem 2, the book, page 72, says how tu place RU8 according to disc or drum set-up.
However, Talonmotorsport's uprights are designed to fit both disc and drum set-ups, as you can see on the following pictures of my car.
2013-10-17_12-58-32 by
Voucht71, on Flickr
2013-10-17_17-10-06 by
Voucht71, on Flickr
2013-11-24_15-11-40 by
Voucht71, on Flickr
For drum set-up, this design also allows you to use flexi brake lines going directly into the drum cylinder with a straight male fitting, and not the copper pipe thingy explained in the book.
Hope this will help
Are you going for rear disc or rear drum set-up?