when buying used motors be careful of the con-man mechanics. i have no real advice to give on this subject because i'm still searching for a decent K24A2 to drop in my teggy to match up w/ a RSX type S tranny. the cost is going to be outrageous...but it's sooo going to be worth it. luckily i have the auto hobby shop on base to work on her with and all the tools and accessories are there when i need it. my suggestion is to hold off on that engine and keep searching.