[Ant]

Shawn,

I agree with the leather option for the seats, I have had two cars done now in leather, nicer look and feel, keep some dressing on it. I use my tonneau cover on hot days when parked up for a while.

Dashboard, this is an area that can make or break the car, one answer
Vinyl reasonably coarse grain topping, similar or as used on tonneau covers for utilities trucks and
AC Cobras, Jaguar E Types etc, with no padding underneath and you will get the original look with either Smiths Autometer repros etc my opinion a lot dashboards look like sh*t.

You could have a look at an original or Kirkham, Superperformance or ERA with some samples from an upholstery shop, having said that leather can appear in the same grain, but as mentioned in this post vinyl may have more sun protection.