I love my GSR. And I got a pretty good deal on it. Its a fully loaded 98 in great condition with 67k on it when I bought it. The guy that was selling it didnt know what it was worth. I threw 8,000 cash and he signed over the title like it was diseased.
If you be patient you will find good deals. Stay away from dealerships when looking for GS-Rs. From my search I found out that they know what they are worth and will hike the price way above what its worth. I remeber seeing a green 96 GSR at Acura Carland with 120k miles and they were asking $7,000 + my car as a trade + tax.

As for the engine. The 1.7L was for the 92 & 93 Integra. In 94 they switched to the 1.8L.