I saw this beautiful statue of a 'God' in a big temple in Khon Kaen yesterday. It had 8 arms.

Is this Pra Prom?

Did it also have 4 faces ?

then yes it was

Phra Pom Si Nah

a.k.a.

Shiva

Did it also have 4 faces ?

then yes it was

Phra Pom Si Nah

a.k.a.

Shiva

You're a little confused. Phra Phrom is Brahma, not Shiva. Shiva's name in Thai is "Phra Siwa".

But yes, Phra Phrom has 4 faces and 8 hands.