BJR Racing this is great info you have. it is awesome to have someone with this type of experience and willing to share it. as far as other combos and pm'ing everybody back, maybe you could share some streetable (say 10 to 1) combos for the slant6 ,318,340,360,383,426,440 and post them to the tech archive for everybody to have a guide line as to what to expect. this would be great to have for review. just a thought.........