ok here is my dyno sheet i know the numbers are not to be oooo and ahhhh'ed about but i was happy wit my gains that i have made. Ok first the red was my run wit this set up:

B18a head
Skunk 2 cam gears
3 agle valve job
crower 404's
Crower valve springs/retainers
Rc 310cc injectors
B&M Fpr
walbro 255lph Fuel pump
b18a block
ITR oil/water pump
.25 over Ctr pistons
Acl bearings
new oem crankshaft
Ls rods
B16 j1 tranny
XTD stage III clutch(very under-rated)
dyno tuned wit a vafc
stock exhaust mani, Tb, IM

And in blue is the same setup jus added my header, muffler, and 2.25 piping and gained 23 more horsepower to the wheels. so i cant wait till i port and polish the head and add my blox IM and my maxbore TB. So im happy so far.