Who wants a mopar turbo kit?!?!

Cast 'unicorn' manifold is just a more simple setup. If you could find who cast those back in the 80's and ramp production back up, that would be the cheapest as a casting is less expensive than a stainless header, generates less heat (less surface area) and is rugged as hell. Also stronger to hold that honkin hair dryer. But a new casting is your call. I know the capital outlay on a new casting is bucks. Stainless U-tubes feeding a twin scroll turbo would make a nice pedestal too.