Just a thought but if you are wanting to stick with the h23 you might also look into the jdm version which is the f22b rated at 160hp. You can find it with 35000 miles or so for about 650$ + freight and nearly all parts are interchangeable with the h23a1 besides some internals and maybe some sensors. Its an alternative to consider if you cant afford an h22a or find another h23. The only bad thing I have heard about the f22b is that sometimes you have to keep the intake manifold from the h23 and swap out some of the sensors from your current h23 but thats no biggie.