I used to have a pair of Sparco Stars. I didnt want to use a racing harness since I use mt back seats. The Sparcos had no attachments for bolting on the stock belt buckle so I just went to Home Depot , bought an L-bracket and fabricated it to the side.

Whats weird though is that in my friends 92-95 civic he had a place to bolt up his buckle.

One more thing , Sparcos dont come with any kind of hardware to bolt it together.