The unburned gas which is toxic can remain in the cylinder head of a normal production engine can be returned and sent to the combustion room along with the mixture with this oil tank. Where as with competition cars the unburned gas let out in the air. This tank will not pollute the air and re-burn the gas.
Arospeed Oil Catch Tank comes with piping of either 9mm or 15mm - see your model for details. Universal models are also available with mounting bracket and all other parts included.