I have the Novitec which i am selling here as Ive sold my Scud:- http://www.ferrarichat.com/forum/vbclassified.php?do=ad&id=3147 Ive never weighed it but as it has a tiny muffler it doesnt weigh much at all, if not around the same weight as the titanium Tubi (the Tubi has a bigger muffler and more bracketry). Ive heard and driven a scud with the Titanium Tubi and you would not know the difference between the Novitec. IMO the Tubi wasnt worth the additional $.
the car it was on is sold (it wasnt my car). if you look for the scuds in brazil vid on youtube you get a very short clip of it
Tubi has a titanium system that I can get you for $8890 shipped within the US. Novitec doesn't have a titanuim version but theirs is $5490 without valves and $6690 with plus shipping.
Kreisssieg has a catless version what happend with the exahust sensors? I dont want the check engine light on. http://www.kreissiegeurope.com/shop/search/Ferrari+430+Scuderia+Kreissieg+