A peak into the other teams locker room

[femtnmax]

Lots of interesting information here. 

http://www.grandsportregistry.com/lt1vslt4.htm

Just to name a few:  Note the higher compression, revised cylinder head ports with higher cfm flow, unshrouded valves, higher rocker ratios (and using aluminum rocker arms on the street), larger valves (yet lighter valves), conservative valve duration at 0.05 lift, ovate wire valve springs. 

To steal ideas from one person is plagiarism, to use ideas from many people is research.