Tuned ferraris (Koenig opinions and more)

I was curious what the consensus was (if any) about Ferrari tuning, including body modifications and similar... are there tuners that can do no wrong? (Koenig I would assume if anyone) Is there anyone else I should know of who did similar things with Ferrari's? (I am not an expert, I just remember Koenig-everything with 700hp and more plastered across Motor Trend, Car and Driver, and similar back in the late 80's and early 90's) Do Koenig cars hold greater value (sort of like Callaway Corvettes have greater value) or does it matter less now two decades later? Are people generally impressed by performance-improved Ferraris or by modified bodies on them, or do most view them more like collector vehicles, ideal as they came from the factory, and similar?

I guess what i'm asking is whether there any kind of 'tuner' subculture like is so popular with the japanese cars or does that lose points to modify in most peoples book?


PS sorry i'm posting so many articles at once, I don't get online much so I tend to binge-post everything at once and then return a month or two later to catch up busy with other things.