THere is no performance loss with the extra area. It also isn't a big deal to port down into the head on the oval, but it does help and will set your motor just that little bit above most of the swap crowd.
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
See My Mods
'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
'06 Mazda5 Touring, 5spd,MTX, Black
