[jonszr1]

by full porting do you mean heads ,inj housings and plenum/ who did the porting and assembled the motor ? i have a callaway 475 s nat thats supposed to be fully ported and the hp dymo numbers are 396 . i also have a 90 that has only the inj housings and plenum ported and the hp on that car was 409.9. so i can depend on how it was ported . more info would help on finding out if you are getting what you should be getting