There is a 91 prelude si for sale in great condition for cheap. has the aws which is my main reason for looking at it. me and a buddy were thinking about making it a track/ street car. the b21 has the typical problems, burning oil, lack of compression and overall is a weak motor. not to mention has over 200k on it...so.. Will any of the B series engines bolt up or is there something different about this motor..im having a hard time finding alot of info on the topic.... thinking a ls turbo would be my plan...cheap and effective for power... thanks for the help..