I'd put a 40g base price MINIMUM into one discribed above. Just as long as the quaility was there and that money put a nice base build together. This is hypthetical right? I am already doing my build with IM.
I mean, look at a framed IM... really a neat thing. A base Speedster is 30G. Add discs, sways, wide fives of your choice, torsion bars, R&P Steering, a mid level 2110, a heater, and you are at 40. add leather, a 5 speed, etc, etc. and you are passing 50. You can see why a solid framed Coupe A would have to come in for around 40 ++ base price.
Realistically, I think it would take that level of quality to put a 356A Coupe (styled stock to carrera to outlaw) on the road. My guess a big issue would be body flex... so that frame better be solid. And the mold has to be at the 98% level of excellence. Look at the windows on a clone Daytona Coupe or a GT 40, and the frame.... then tell me a solid 356 can be done (base car) for less than 40. Heck, just think off the cost of replicating the dash, back seats, headliner, and....
Otherwise go back to option C..., on a pan.. and I still think a 30-35G base would be required. It takes 20 to get a base VS or JPS out the door, right? Great cars, and very durable builds. But try and imagine your JPS/VS with a molded coupe body WITH the widows down... and imagine the flex unless the mold and reinforcement were right. Then you would need some HP to pull the extra weight..
I think a SAWster would be the way to go with this set up. If you want a true road car with all weather capability and handling. It might not be, "aircooled", but it might be cool for road tripping and hauling ass!
There's a thousand Audi TT Coupes out there for a whisper. I know... I would rather have an A coupe than a TT Coupe too. I am just trying to inject, what I think, may be a realistic price for a framed 356 Coupe.