Does anyone know of a source for the plastic looking, but possibly nylon,
sleeves that cover the fuel lines on a 2.1 L engine.  I am building a spare
engine and trying to duplicate, as much as possible, all the original engine
components.  I don't know what purpose this sleeve serves but it may be an
insulator or abrasion guard for the fuel lines.  Second question, are the
heads on a 2.1 L engine identical right to left?  I've looked at the heads
and all the connectors seem to be the same if one were to take the head and
rotate it 180 degrees. Am I correct in this?