I'm looking to piece together a spare K20. When piecing a motor together is it easy to forget small things and have them left out? Or is it better to just buy a motor complete? When buying a head how do you know if its from any of the "real" k20s or if its off of a k20a3? And lastly what is a good price to end up spending on this spare motor minus the upgraded piston and rods that would most likely changed?
Thanks in advance!