[pvicari]

someone please help!!!!
I have a 351W in my cobra and am having trouble with power above 3000RPM. I replaced the ignition system with an MSD 6AL, MSD distributor, cap and wires. Ever since I changed this, I can not get any high end power. I regapped the plugs as MSD said and this has not helped. I checked the timing and it is dead on. I checked the plugs and three of them show carbon buildup, the remaining 5 look perfect. The three with carbon are 3, 4, and 7. I checked the compression in all the cylinders and they are all consistant. If I accellerate slow it seems fine but if I jump on it, it bogs down and really bogs down at hiway speeds.
Any help in diagnosing would be extreeeemmely appreciated.