Question about a few plugs 1JZ 89

[DOUBL3 D]

Alright guys so my buddy made the mistake of buying a 1JZ swapped big single mk3 that has had more than 10 owners since the swap. No good.

The car had a stinger EMS that seems to be tuned to at least run. The whole set up is really sketchy and needs some work (a buddy and I are going to help him clean it up best we can). The fuel pressure regular was plumbed into the intake manifold and bov and just sitting un attached to anything. I have no idea if that's what its supposed to look like but it was leaking some oil....no good.

Pics

Anyway I found a bunch of plugs that didn't look like they went to anything.
Pics

Just curious, thanks!

 

[525gte]

fuel pressure reg has to have a boost\vac. Line to raise and lower fuel pressure under boost so it has to go to intake. And the plugs look like stock hydro fan plugs not needed. If its running a clutch fan or electric fan. The looped water lines is real common on the housing when deleting the twins and going single.. you can pull the water kneck and weld holes up.
Looks like in the pic the hydro fan may still be on it.. order a 2j waterpump and pully and all that junk goes away
And the bov has to have vaccume run to it also