engine swap

thinking of swapping a h22a1 into a 92 si (sorry but the h23 just isnt cutting it). anyways, anyone know of a good place to find one with low miles on it ..looked on ebay but no real luck. also, how hard is the swap, most people i talk to says that it will fit the old motor mounts and should bolt right in ..sure as hell hope so. but if anyone knows where to find an engine for a good price, let me know. thanks