i have a 92 civic, db16z6/auto and i'm fairly new to the area (arkansas) so i don't know all the good machine shops, also i'm mostly familiar w/chevy's (this is my 1st honda and i really like it). i have 195,000 miles on my car and it still runs great, strong vacuum, no misses, no smoke, a few leaks. When i rev the eng. to about 2500 rpm in neutral i get a mild erratic knock and at just above idle, say 1000 rpm i get an occassional faint metallic screech that lasts about half a second, but i can't hear anythin on the hwy. both sound like they're deep within the engine, but i can't really tell where from, i don't really want to wait for catastrophic failure, i was thinking of getting another engine and rebuilding it at my leisure. i need an engine that will bolt in w/ little or no mods, I really don't want to do a lot of work also it need to bolt up to the existing tranny. i'm certainly not above rebuilding another db16z6 but it would be nice to know my alternatives, also some idea on the cost of a block