yes people have also had good gains adding a na25 head to a na30 so i guess it works well off boost although it would have a lower comp. also hed be running better aftermarket management? and bigger injectors, fuel pump etc. i know sky 30 has aftermarket management his mate told me he does all the tuning himslef?. what id like to see is a comparacent between a 26dett and a 30det. im looking at a coupe today and i think i may swap the engines over and have to start off a 30et in the coupe then go det later when i have more money. hmm or just put a 25det or 26dett in the coupe hmm u just cant beat the torque