Yep, like dom93hatch said, any B-series engine will fit.
Oh, by the way, 700 dollars is not too much depending on your location. I lived in Oklahoma and had to change the timing belt on my civic, and yes, it cost about 350 with the water pump from the dealer. Now, back in Maryland, I canīt find anywhere locally who can do it on my sisterīs accord for under 650... looks like Iīm going to be stuck doing it
But anyways, yeah, I would definately go with a B18c from a GSR, or one of the JDM Type-R Engines if you can afford it.:naughty:
Good luck man.