Originally Posted by alloys999
Can i put GS400 engine on my GS300??
Sure you just will need EVERYTHING to go with it, but it'll all bolt right in.
Most places you get a motor from will not be able to provide all the extra small stuff you need. Just an engine and harness..
I would buy a totaled gs400 so you have a full doner to work with. It will be by far the easiest way to get everything you need.
Then you can still part out some leftover parts from it, and recycle the shell for a few bucks when your done..