I realize many current 6 cyl TT engines can be extraordinarily good, and super-powerful vs. our NA V8, but I simply can't come to terms with anything less than an 8 in a Maserati GT, nor in a Ferrari for that matter.
Nothing tangible to base that on, other than my personal bias..an entirely subjective thing.
Ironically, I did own a 6 cyl Maserati ( Merak ) long, long time ago in a galaxy far, far away
, but in the last couple of years after driving some 6 cyl TT cars than can annihilate our GTs, I would still not trade our V8 for any of those engines. The 6 cyl engines just FEEL weird to me ..the way they revv is not my cup of tea, and also they lack something I can't express other than calling it "soul ". Frankly I even prefer a large capacity 4 cyl (3 L ) to a six because of how the engine feels and revvs.
Furthermore, the turbo muffles the exhaust sound of what is already a pathetic note most six cyl engines produce. And sure, Porsche and a few other top brands have been able to attain very impressive exhaust notes in their six-banger cars but that's just been a fairly recent development. No doubt Maserati will match or exceed that note with any 6 cyl car they might release, but still.. the Ferrari V8 is epic. IMO.