Well i'm full aware of most of the differences between the jdm h22a and the USDM H22A1, H22A4. I'm in the process of swapping motors, (slung a rod, *yes, it was a lack of oil, didn't know it was leaking so horrible..cuz me some slack, i only had it for 2 months* and it's in the shop awaiting for me to purchase a motor and have it taken there) Well, i know the JDM motor will probably cost me a lil' bit more money, but i here that the JDM H22 actually fits in the 4th gen ludes easier than the H22 out of a 5th gen usdm lude. HP ratings are the same unless you go type R or Type S which i wasn't planning on doing either due to money constraints. I can hit up a local junkyard to get a USDM H22, just let me know what you guys think. If i can save the money and still get the same HP i'm all for it. Anythings better than the SOHC F22, i even went looking @ JDM F22's which are extremely hard to come back unless i just suck at looking, just so i can get the extra HP and save some more money. Let me know what you guys are thinking. Anything would be helpful to me at this point, i just want my car back. They told me if i give them an engine by monday, then i will have my car back by friday at the latest.