That's a 89 Sirrus. I have one that was given to me in pieces. Your's look to be in great shape. These are very nice race bikes, and if you can get it for $100 and it's clean, straight and components are complete, you did very well. It's full Shimano 105 7 speed SIS, with Uniglide freewheel. This one looks complete. Snag it fast!