Yep - it'll be a Si if it's DOHC... but there was also a twin-carb 1500 with glass top and a few other varients - make sure you get a DOHC version
I've seen a few glasstops now and they do look sweet... but given the fact that I'm follicly challenged, a hat is a must - it's bad enough that in Aussie summers (up to 44 degrees Celsius) I have to hit the sun block on my arms etc or get fried if I leave the windows down or roof open
FYI:SiRs were early '90-'91, only the Integra XSi/RSi were '89 onwards.