1995hatchcx

I recently purchased a b18 ls motor, i was getting ready to swap it into
my 1995 honda CX. I was using my stock CX harness because i was told it
would work and the only thing i would have to change is the 1 wire to 4 wire O2 sensor. I went to hook everything up and i noticed on the intake it did not have
the MAP sensor on the throttle body and also a EVAP purge control solenoid valve.
I think the whole intake manifold is from a OBD 0 car. I bought it from hmotorsonline and they told me they was going to convert a OBD2 to and OBD1 motor but i think they put the wrong intake on it!
The motor has PR-4 stamped on the intake what does that represent?
Could i just put a new throttle body on it? or do i need to change the whole intake?
Is the EVAP purge control solenoid valve necessary?
My Motor is stamped with B18 on it and that is it! it doesn't have the letters A or B behind it

Qfactor

if it has the PGM-FI plaque on the intake manifold then it is a OBD0