AMT/Ertl had a Tie Interceptor out that still may be in some stores. The model is a snap-tite, but if you break off the pins and do a little accurizing, it'll look good.
I though there was an Interceptor from SMT Models but it turned out to be a Tie Avenger - still a good looking model at
http://smt.theshoppe.com/categorypage2.html Hope this helps.
Kev