spending 3-4k on turboing a honda would yeild some very good parts, for that price u could have all new internals and very good turbo, and turbo parts. You do not have to pull the engine to do the install, but u will have to most likely pull the oil pan to tap the oil return line. Other then that, there is a little bit of fabrication that will need to be done(downpipe and charge pipes). but other then that its not too bad.