I would consider it a luxury car
Kinda like the audi A8...450 hp V8
Plenty of muscle, but also tons of luxury
I won't deny luxury cars can be fast, but i will say muscle cars can't be luxurious
(And that's just my opinion of course)
Edit: almost forgot my main point...no money spend on options that don't make it faster
Once you start doing that, your leaving muscle car territory and entering the luxury segment
