hey dude........ u need to get it done professionally first off
next, dont get cheap stuff, if u are going to do it, u have to go the hard and expensive way.... otherwise, your shit will break..... u hear the saying... u get what you pay for, same rule apply here....... b20/vtec is off the charts, but also very expensive for the block..... i have an ls/vtec which i actually just broke in and ill just share what i have learned so far....
i have a gsr head
ls bottom
je 11:9:8 pistons highest u can run on pump gas
eagle rods
skunk2 ecu...... 5400 vtec Xover and 9500 rev limit (never go above 8200 unless u have a complete valvetrain upgrade) computers are a must in this game
dc sports 4-2-1 headers gives some torque
skunk2 intake manifold... wonderful
test pipe, if u can get rid of that cat go for it..... sounds good and a lil more power
remember to get all new bearings
aem cold air intake
tenzo exhaust
GSR tranny........ 3rd and 4th gears are craZy
i have a stock head, but build the bottom end first...... its really important
get all new belts, new water pump, i have stock oil pump
upgrade your fuel...... new fuel pump and bigger fuel injectors such as 310cc
im pushin like 175 to the wheels
hope everything works out for ya...... let me know
Shawn