Hi everyonewelcome ! qp is a great choice imo. ben was formerly the chief mechanic of hong seh so he knows his stuff. he also has the sd2 n3 testers needed for masers. hes very familiar with qp and can do all your usual mods n upgrades. i think he's also formula dynamics recommended spore installation guy.
i have tubi on my qp . came with the car when i bought it .i think tubis are more bassy and prone to drone at low rpms. larinis i believe are sharper pitch more baritone which i personally prefer. best to check out the numerous youtube clips and decide. for larini call gary of exquisite marques 92358911.he can also handle routine work for masers.
for rims i think its probably most cost effective to look for a preowned set.stock qp sport gt wheels are 20" n i think maybe gt 20" wheels may also fit.ask ben and gary sometimes within their circle of maser customers they might know of an available set.
for insurance try anika brokers who specialise in exotic car insurance. call swan yin 62227881x962, if you like driving your qp the way it should be , think about joining the exoticars club, special benefits for club members for insurance gotten from anika too. pm your details if u wld like to join .
A quick update following the very helpful comments above:
I had the Larini rear sport mufflers fitted at Exquisite Marques. These are absolutely fantastic and a huge improvement over the standard exhausts. When I went to collect the car, the mechanic started it up whilst I was standing behind it; he then blipped the accelerator a few times. His comment as he got out of the car was "now it sounds like a Maserati, right?". Oh yes!
After a couple of months with these I have now decided to go louder, so have ordered the Larini X pipe. I have also ordered a bunch of other (tidy-up) parts along with a new set of 20" Sport GT rims - all from Exquisite Marques. I am really looking forward to having these fitted, I think the car just does not look right on the standard 18" rims.
All in, I really would recommend the Larini exhaust system. It has a great note and really does justice to the engine without being too loud inside. The only problem with this is that I always drive the car with the windows open as I want to hear more! Hopefully, the X pipe will help address this without going too loud - I'll keep you posted.
Thanks again to Kopiokosong for the orginal post above.