Ok so I just got a b20 yesterday that had a spun rod bearing, getting everything new in the rotating assembly and balanced, my real questions are what should I pull off my gsr motor? Do I use a different alternator belt? What water pump, what oil pump, and what timing belt? I know the vtec conversion kit comes with the right head gasket, and I know I use my arp head studs out of my gsr, keep in mind another seperate gsr head is going on the block.

My goals for the motor:
Full port and polished head
sk2 intake and port matched 68mm tb
full supertech valve train
undecided on cam
dc 4-2-1 header
Blox 2 port competition fpr with all stainless braided fuel lines pushing 60 psi fuel pressure

Block decked and honed with stock polished pistons.
Ls rods, which I believe are the same as b20 rods
Shaved and lightened crank pulley (balance is obviously inferred)
knife and polish crank
comp 4lbs flywheel with comp stage 4 clutch

GSR trans

So help me out with maybe a more cost efficent way of making power and suggest what I should do for oil pan/ water pump/ oil pump/ alternator belt/ timing belt?

 

use the stock b20 pan
if in good shape you can reuse the gsr water pump and timing belt
since you spun some bearings id buy a new oil pump.
alternator belt depends heavily on the pulley youre using. if its a gsr pulley, use a gsr belt. if b20 pulley, use b20 belt.