Timing Chain vs. Gears vs. ?Roller

What do you mean "doble row" strokerscamp. Isnt there only two types of chain sets single or double. I've never heard of or seen of a double "row"....

How much was the gear driven milodon sets. Anyone care to elaborate with crank/cam harmonics w/o a fluid dampener. Wouldn't a double roller w/ a tensioner be just as accurate as gear sets. It seams as people go gear driven for the whine to give the false sense that its blowen. I see the point with acuracy but I see a bigger point with harmonics.

Anyone got any opinions withquality and reputation with Avon progear timing sets and PRW dampers. This is what I plan to run on my 408 4x4.

http://www.hughesengines.com/Index/products.php?browse=category&level0=U21hbGwgQmxvY2snTEEnIDI3MywzMTgsMzQwIGFuZCAzNjAgZW5naW5lcw==&level1=VGltaW5nIENoYWluICYgQ29tcG9uZW50&partid=23311

http://www.hughesengines.com/Index/products.php?browse=category&level0=U21hbGwgQmxvY2snTEEnIDI3MywzMTgsMzQwIGFuZCAzNjAgZW5naW5lcw==&level1=RGFtcGVycw==&partid=25204