Ah sure its probably my terminology thats wrong but we are def thinking of the same part.
On my own PR the vents are open on the spas body as its a real spas cage (so I have no choice in the matter, but with the resin cast shotty inside it means you cant see straight through). I may be completely wrong (the PR experts will know more) but i believe the vents are open on the originals aswell (bar probably the stunt guns if they were just cast pieces). Either way its a great start piece as you say and will look great with some better paint.
On my own PR the vents are open on the spas body as its a real spas cage (so I have no choice in the matter, but with the resin cast shotty inside it means you cant see straight through). I may be completely wrong (the PR experts will know more) but i believe the vents are open on the originals aswell (bar probably the stunt guns if they were just cast pieces). Either way its a great start piece as you say and will look great with some better paint.