i wouldnt stick the hydrogen system to the top of the air cleaner....it has been recommended to me that it would be better to run a tee adaptor before the pcv jar so that it goes in with the oilish fuel...its supposed to mix with the fuel created by the pcv jar and create natural gas...but u dont have to change the carb in any way if u hook it up either way...only one side has the lids...make sure u put lotsa holes in the lids too...but it is the positive that has the lids...the pcv jar is definitely a good project....but u will need to do an oil change unless u already use a very cheap oil...cause good oil doesnt crack into fuel cause of additives...also try a litre of tranny fluid if u want to get bold...cause i did have some tranny fluid in mine when i did the tests...but first just see what straight cheap oil is like...and if your happy with the milage gains then just leave it...