Engine Difference between 2.0 si and 4ws

I have a 1988 Honda Prelude 2.0 SI with a b20a5 engine. I wrecked the car but im about to buy a mint 1988 2.0 si with 4 wheel steering with only 75K. Only saw the outside of the car guy wasnt there to open it. I was wondering if the cars share the same engine (b20a5). The guy told me the only problem was it burns a little oil. I have read about the other prelude engine im not sure about the number but know its a 2.05 instead of a 2.0. I know the 2.05 is known to burn oil and the guy said it goes through a quart a little over a month. He also said once in awhile it will smoke for a second when started cold. Does that seem normal for such low mileage assuming its a 2.05 and not a 2.0. He is selling it cheap for only 1800 cause he thinks it needs new rings or valves. If it turns out to be a 2.05 are any parts compatible off my b20a5. If it has a b20a5 it shouldnt be to hard to swap with my engine in my wrecked 2.0 si that never burned oil and has only 100k. Thanks.

Dude, it's a mint Prelude for $1,800! Stop asking questions and buy the car! :biggrin:

Honestly, I never knew there was a difference in the engines on the Si and Si 4WS. That's news to me. Not saying they're not different, but when I bought my brand new '89 S, I don't remember them saying anything about three different engines. I don't even know if there was a difference in the S and Si engines other than the fi.