Swapping my h23 for H22 in a 93 4ws.
1st question: the new motor's intake manifold has less ports for vacume lines. I just noticed it last night so i havent actually looked at a vacume diagram yet to see which lines but does anyone know about or have experience with this?

2nd: Could it be because the new motor is OBDII? the exhuast manifold is mandral bent tubing rather than cast iron.

3rd: if it is OBDII, is the swap possible since the car is OBDI? ... any help is much appreciated!

 

1. look at those diagrams.
2. yes, maybe aftermarket header..?
3. yes.