myself, hms and collateral did some driving tonight on the gp/d and gp/f course, and things seen fairly even, especially once james sorted out a tune for his sls! Me and collateral (andy) spent the night slogging it out between my gtr spec v and andy's 458, and there really much in it, both are practically equal, bar the drivers lol, but as james will tell you, we both set some great times!!
In my opinion the 430 scuderia is not a contender unless you run about 600bhp, only then will you be in with a chance of keeping up with everything else.
Would have been nice to see a few more gt3 cars out tonight to help give more info regarding what needs tweaking further, but there is plenty of time yet :-)