[fasterpatrick]

Yes, Mike you are not alone on the 4 into 4's, here is my position. The shorty headers have been developed by ford racing, and have been tested(I will clean up the inside of the welds before final assembly) and will allow what would be a better reading for the O2 sensor, over just one of the tubes. also 4 into 4's would only be better performing, if they could be equal length tubes. That is a road I have been down in the past and decided not to travel again. But thanks for the comments. Patrick