So i just bought a B18A1 block and head w crank shaft, valves, springs, and 2 intake manifolds.

My plan is to buy my buddy's ITR pistons, shave the head, and maybe stroke it.
I also have thought about getting a GSR B18 Vtec head.

Right now i dont really have the money for any of that so my first question is which intake manifold should i use. 1 looks just like the 1 of my buddy's stock ls and it has a throttle body. The other 1 has no brand name on it and it has a fuel rail and fuel injectors

 

this is a accord forum so you won't find much about b18 here. Also are you trying to put a b18 in an accord? Ton's of modifications also it will be under powered for our heave accords. Unless you swapping into a 1st-3rd gen accord. But since you didn't give us all the info to help I'm only guessing at this point.

take some pics of your intake manifolds...as we can't tell what they are without seeing them,

 

ah shoot i miss read it i thought it was honda/acura not honda/accord....darn.