Hey Sebastian - just be very careful here...
I have two of those kits in Seattle with me right now that Group 2 sold to Jes and I (purchased from Brad at Alfa Riccambi recently) and the fit is less than perfect (mounting also requires additional effort and custom brackets!) People should know that fitting them is NOT simply a Saturday-afternoon driveway exercise.
Now, some guy buys it from you and comes back to
the dealer (your employer) and starts to complain about little things - you get where I am going with this... Be sure about what it is that you are committing your job to (in addition to your reputation within the Alfa-community.) Potential problems are not limited to simply the product and whether it fits or not - we are a fickle bunch!
Guys - I am not trying to throw cold-water on anybody's efforts here or trying to piss on any batteries - I am just stating reality. It is NICE to see another member put some of their own time in to these types of projects - there are others here who have done this plenty!
I have refunded money in my dealings with Alfa guys - plenty of it! (But my job - the way that I earn my living - was never impacted by this - just my own personal pocket book.)
Just looking out for you and everyone else here bud.
The kits work, they look great once a body-guy has massaged them a bit, but still these are Alfa-people - perfectionists (and then there is the
occasional guy who is an "expert" - right?)

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'87 Milano 3.7 Litre V6 156 Series 24 Valve - "Ducati Dark"
'88 Milano Verde - GoTech (24 Valve REAL Soon Now!) - Black
'95 164 LS - 6-Speed 3.45 L 24V w/UniChip - Burgundy
'94 164 LS Auto - Baby Seat!

- Bronze
'84 GTV6 (24 Valve & GoTech Soon!) - Silver
'74 GTV Twin Spark w/ITBs & GoTech - Red