For what its worth Ive had both of the Crosswind and the Air Gap intakes on my truck when it had the stock bottom end 360 magnum in it. There was no difference in ET at the track.
90 Dakota 408 CID R/T heads 727 trans 9.5 converter 8.8 rear Pro 275/60 drag radials [email]11.09 @120mph[/email] N/A
