First hand experience:

JDM B20b bottomend... stock
JDM B16a head ... stock w/ Skunk2 cam gears +2 & -1
ARP bolts

The engine has about 29k on it. About 1/4 of those miles are race miles. Drag strip, road course, & the streets of the East Coast.

I have been to the dyno several times w/ this engine & datalog everytime I race. When on the road course, I usually put my redline btwn 8100 & 8300 depending on where I need to shift.
On the dragstrip, I shift @ 7700 rpms from 1st-2nd... shows better times. Also, I shift @ 8200 from 2-3 & 3-4 as those net me the best times & you can see it in the engine speed on the datalog.

Any questions??

Pete