So just wondering if this site is still around. On the LS5-LS6 thing. I have a 1977 VW Super Beetle convertible with a 70's Chevelle SS 454 engine up front and Muncie 4 speed. It has a Rochester quadrajet on top. The neighbor down the street took this out of his Chevelle and replaced it with a 502. So, the question is what's the easiest way to tell the difference between a LS5 and a LS6? Theres not much room to look for num