I knew there would be negative nancy's. If a tough feat to accomplish. since we are talking dynojet numbers, I would light my car on fire if I spent $4K on a blower and made 26hp more than a posi race port with an upper and lower on 93. That's another reason for this build. 20 degrees of timing is low. pretty muh standard timing is 23 degrees for an eaton equipped car. There are more than a couple 540-550 rwhp and twtq posi ported eatons. A good friend has a little ole vmp on his yellow cobra. makes 656 SAE and traps 138. 4lb lower, longtubes and a 2.6 upper. what does your underperforming combo trap?
I've never taken mine down the 1/4. No sense in bashing, good luck with your quest. I'll remember to stay out of your threads. You seem to be the almighty of 03-04 cobra knowledge.