Ok so if I get all that, how much difference do you think it will make? I can't boost more psi until I do the valve springs right?

 

valve springs dont have to do with boost, theyare about rpm, if your planning on revving a d16 to 8k then you might want to get valve springs or they will float, but if your going to like 7400-7500 they should be fine.. honda heads rock, they can handle close to 300whp stock.

building the block wont give you more hp, but it opens up the oppurtunity to up the psi, which in turns gives more hp..

the first thing that will go on a boosted engine is usually the connecting rods, then probably melting the pistons... then just various bad stuff lol, but your head "should" be fine... but building a block takes a ton of research, and about 2k in parts and labor so yea.

dont get underdrive pulleys, hondas stock pulleys have harmonic dampners which keep vibrations down, the aftermarkets dont... keep the stock ones

and unless your planning on going over 250+whp, dont worry about your throttle body / spacers/ intake manifold... just bea waste of money cuz your engine breathes just fine..

leave your car as is and just turn the psi up a little and get it retuned, just make sure you stay under 200 whp, your car will not need to be built with that much power, and it will be fast as heck still