I'd happily have one of these, Please. *VBS*
https://www.roadandtrack.com/motorsports/a10022304/lotus-elise-hillclimb-car-uses-v8-formed-from-two......sans the decals, though....don't desire to be blatant, as the sheer sound is music to my ears. ;) Even through 'roadie' earplugs (Yes, I have & use them...I'm enthusiastic, not stupid. :p *L*
In lieu, and certainly less expensive...a '18 Focus RS Hatch with some *ah* 'reverse detailing' (removal of some of the 'obvious' factory markings to render it a bit more 'innocent looking'...more 'typical, harmless, not capable of sucking your doors off'.... What used to be called a "Q ship".
VW 'bugs' with a Porsche 911 engine comes to mind. Made 'Vette owners pull over and stare at you disappearing....*smirk*
Renting out your audio gear strikes me as a sure-fire way to become more neurotic than you already may be...IMHO.
Y'all are welcome to drop by and listen, though. AVL is a nice place to visit....*G*