Ah, I think Smackln hit on what Sailordel was asking for!!!!
Yes the closest Firsts on vintage and size to your Legend would be the First 38 or the 38s5. If you look up the ratings your boat is a touch faster. Your Legend is a genuinely quick boat.
It is also the reason you have to look at vintage when it comes to comparing sailboat ratings. In general, with better design and technology, boats have become faster over time.
But there is more more thing that plays.
In the 70-80s, the dominant racing rule worldwide was IOR. IOR was a complex, torturous rule that was designed to be gamed by boat designers intent on making their boat seem slower to the rule than it was on the water. That was the whole game.
It was expensive for boat owners, and impossible for manufactures to create a big production line of racer/cruiser that met the rule. So during this time, Beneteaus that raced were of the FIRST CLASS line, dedicated IOR boats. First series became fast cruisers.. Some of them sported interiors done by leading fashion designers.
The First class line was typified by these two boats.
http://sailboatdata.com/viewrecord.asp?class_id=1116
http://sailboatdata.com/viewrecord.asp?class_id=2156
Fast forward to the mid 90s. It takes some time for the market to react, but now the much better IRC racing rule start taking hold. The First line can retake its place the racing Firsts, starting with the .7 line. Current First are over 20/sec a mile faster then the models that preceded them. Progress!