That's a real quandary for a guy in my shoes.
My car has no fewer than five possible VINs. It has a 914/Cessna engine, a VW gearbox with a broad range of sources for the guts, 356 and Bus suspension parts, front brakes from a 914, rear brakes from both a Beetle (DS) and a 356 (PS), a clutch from a Kombi, engine bits from TRW and a 912, a non-standard handbrake, actuator cables from Carey at Beck, a frame head from a 356, structural tunnel and frame-horn metal inside from a Ghia and a Beetle and lots of other crazy **** going on.
It carries 1964 356B numbers, and I've let the Registry guys know that VIN is flatlined. Done as a 356, now living in a replica shell made by CMC. I don't have an accurate Beetle or Ghia VIN, a Bus VIN or a 912 number, either.
Technically, it's a mutt. Generally, it's a kit. Specifically, to the People's Republic of Maryland, it's a kit based on a 1964 Porsche 356B. I've termed it a resto-mod for Carlisle purposes, told folks in traffic it's a '73 Beetle SS and other folks it's a 2006 that was built from parts.
I might be lucky that the parts are all visible under the skin, and the Gee-Whiz factor seems to overcome the nose-on-a-hook thing. And, let's be honest, you can't buy a kit to make one like it. There's a giant difference between putting a car together and truly building one, and I feel like most of the folks here have some blood in the game.
I don't know if I've ever turned a wrench on the Porsches I've owned. If I'm being perfectly honest, there's an almost inherent fear of the marquee. "How do I dare turn a wrench on this thing that somebody charges $165 an hour to fiddle with?"
I used to be scared, anyway. Now, in a car that's cost me almost ten times what my last Porsche did, I've removed whole pieces of it in a parking lot to get rainwater out of the 2424-cc engine.
Of my '73 Beetle SS.