Meh.
"Built By Legends" is already do that using pedigreed industry experts and brand names.
For $350k I'd expect a SS Garage Active GTR build or a 912 build by Kanmanufaktur.
https://www.instagram.com/kammanufak...Y0M2ZqZXdqcA==
https://www.instagram.com/active4488...52a3FzdGMxOGpu
SS Garage basically strips a GTR to shell and reskins it in a super wide OEM appearing carbon body, roof and all. Power train is a RB28, single turbo, holinger 6spd, air suspension and 20" 3pc wheels. It's a GTR on steroids and the body work is stunning. The body kit is $30k, completed cars are $300-$350k.
You should know about Kanmanufaktur by now. Building long nose 912's into fantastic enjoyable cars. All modern electronics and suspension, custom designed carbon fiber tub and body, built Type-4 engine to 200hp, built 5spd. Absolutely stunning and an actual "drivers car" unlike a $1.5M Singer. Started at $270k, now up to $350k due to demand and the ever increasingly retardation of the Air-cooled market.
Personally I wish someone would build new Porsche bodies for $25-30k so enthusiast could get back to building and driving them. Just rock hot Type-1s or EJ20X/EZ36 engines and 6-rib transmissions