Hi guys erm, i havent had this car long and i was wondering what engine was in it (e.g. Z20LET or C20LET) as i am looking to upgrade it. I'm fairly new to vauxhalls which is why i am querying. Also does anyone know if you can change the ecotec head cover for a stainless steel one?
(forgot to add its a N reg astra 1.4 ecotec mk3)