Im on SBR website and im checking out the springs and lifters for my head project. I was just wondering if these are good deals and what kind of reving can they safely handle. So I could get new gauges with a new redline.

Lifters
http://www.slowboyracing.com/estore/...577&page=1

Springs
http://www.slowboyracing.com/estore/...577&page=1

And meanwhile I have the head open anything else I should replace thats stock EX. Rockers, locks etc?