If it ain't broke, fix it till it is. - Unfortunately, that seems to be my practice.
I like Roller Rockers, because of better durabilty, less friction and higher RPM capability. But then there's always the $$ problem.
As far as stock types, I think the lighter Alum type offer precision and weight advantages. Plenty of brands to choose from - just look in Summit or Jegs. Most of the guys aren't going over a 1.6 Ratio, particularly w upgraded cams. Might be able to go w 1.7's w a stock cam, I don't know.
