The small gauges were 2-5/8", with a fuel pressure gauge. I don't know whether they came with a Stewart-Warner or Smith tach initially, but Gurney's car had a 90-degree Sun tach as raced. As of last year, someone was making a reproduction of the Sun tach. Apparently, the Sunpro is currently unavailable, but there's a Bosch unit that's similar.
See
http://erareplicas.com/cars/142/index.htm