f23a1 to f22b sohc vtec?
 

I took my 99 accord lx to a local garage ( they actually have a really good rep here) to get my engine replaced. The original engine is a f23a1. I went today to drop off the the top half of the IMplenum after they called yesterday and said it was needed. I asked to see the car and low and behold an intake was already on the engine in the car. I noticed it did not look quite right. the intake looked slightly smaller . I asked if it was a f23a1 and the mechanic told me no and pointed to the stamp on the block showing it to be an f22b. I noticed it was an sohc head and the block only said f22b. I did not argue with the mechanic or discuss it with him, but called the owner and asked about the difference. My major concerns are that I paid for an f23a1 (150hp) and will likely get at best 145 hp, slightly worse mileage, and higher emissions. He claims the engine is a jdm and should actually have more hp. Obviously though that will have higher emissions. What other concerns should I have ? at this point I dont know what year the engine is, so I dont know if obd1 or 2. I do know the f22b block was a dohc engine from what I could find and the f22b1 and 2 had the sohc. from what I have read, I will get less power, less power band and less economy, as well as higher emissions.I do not know anything about the f22b jdm. Has anyone had any experience with this ? Will the ecu even work from my f23a1? I have a security key and I have heard this will not allow it to work. I really just wanted a good running f23a1 and they are insisting this is such a better engine.

Did you pull the engine before taking it to the shop, you had to take the plenum from the old motor to the shop?

Just me but you are paying someone to do this, you should tell them that you want the correct motor installed to aviod any issues in the future.

With the auto trans issues this gen Accord had, there should be plenty of f23's laying around.