I personally hate the old clock it looks dated..so I changed it to a volt meter Dremel the sides then use Bondo to cover the gaps and paint with trim paint I also moved the heated seats and shorten the shifter
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you should buy the Maserati digital gauge cluster, it really makes the car feel 10 years younger and it has the battery voltage built in because that's a can bus data. The gauge cluster has a few quirks but overall displays much better info than the OEM cluster. Also while the 2008-2017 clock looks little dated with the greenish blue backlighting at night, the 2018 one was updated and looks pretty nice.
that's what I would upgrade too since it looks pretty clean to me (pending nothing becomes of the "aftermarket clock" which in digital form I think could also be made to look slick but at the end of the day we are just talking about a clock) I am only waiting to see if they have a cool design because last year I finally upgraded to that acar radio and ac panel and less then 6 months later they already came out with the 2024 GT radio clone which is even more streamlined and clean looking and combines both into one unit.
Also for your taillight design, while going a different direction could be interesting, I think there isn't a huge need to reinvent the wheel for it, I think the basic design of the gt taillights is good it just looks dated because of the diffusion lines in the lights based on how LEDs used to be diffused. I think the second generation of LED strips/bars are much more brighter which has removed the need to have all the diffusion/refraction lines in the housings. (this is similar to how headlights used to have all the cut off lines on the housings before HIDs came and were so bright that the diffusion lines in the housing weren't needed and now almost every headlight has a clear lense)
Just remaking the taillights with sharp lines LED bars would be the huge improvement like this.
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