328, testarossa vs bbi Front End Settings

Just got some wheels for my boxer, so modern tires are finaly part of the equation. Boxers have some weird specs on the fron end including positive camber. It seems that this was designed to make the fron end breaaway long before the rear, as boxers can be quite a handful when the rear lets go. The problem is boxers also end up with relatively inert steering compared to the delicacy of a 308 and there is significant understeer.

Modern tires will mean that grip in the front and rear shouldnt be a big issue,and the goal must be to increase steering fell with grip. As the 328 and boxer are similar weights I was wondering what the alignment specs are for a 308/328 and whether these might be applicable to a boxer. Alternatively what are the specs for a TR.