Basically i have ported headers and matched up pipe from harvey witch is superb , i did have tubular ones fitted but they sounded crap at low revs so i got harvey to do my standard manifold and add a matched performace upipe .
Anyway what sort of power will i be able to achieve with mine as i am looking to get close to 500bhp with a 2.1 stroker with relevent bits.
I am pretty determined to keep mine but if this sort of power isnt gona be possible ,i wil have a rethink.

 

 

ive heard up to 400bhp but i could be wrong. some1 posted here in past over this type of question