I checked the sepcs again and found out that the Urraco has different specs than the similar Sihouette. As a matter of fact they are completely the opposite of each other...
front camber => 57 min positive, front toe => 0 mm, caster => 7 degree
rear camber => 1 degree negative, rear toe in => 2-3mm
front camber => 50 min negative, front toe => 0 mm, caster => 7 degree
rear camber => 15 min negative, rear toe in => 0 mm
Keep in mind that the S car had a massive front suspension "insert/spacer" to permit the use of the lower aspect P-7 tire. Compared to a much more modern tire like the Yokohama 008 and 008R the P-7 is a 1970's relic !
It added enormous drag and a 225 mm 008 could easily outhandle the 345mm or whatever it was P-7
I do not recall the standard limits of camber on the Urraco but we used about -2.0 degrees in the front and up to -2.5 degrees in the rear...but with different stiff rollbar bushings.
All the S cars that I have driven fast are a handful...they tramline and are unstable in transitions...if rear-toe goes positive due to wear on components...look out !