Cavey's Italian  style restaurant, Located at: 45 E. Center Street Manchester, CONNECTICUT   Phone Number 860-643-2751           Hours of Business: Mon-Sat 5:30-11:00 p.m.           Average Price: $50                   Downstairs is a formal French restaurant decorated with priceless antiques. The cuisine is classic all the way. Upstairs is a casual Italian dining room with Palladian windows rush-seated wooden chairs and contemporary art. Although both menus change seasonally Cavey's French restaurant can be counted on for exemplary rack of lamb while veal marsala is a perennial star upstairs.