i just ordered kooks Lts and Mid pipes. i was wondering what gaskets you guys have used and bolts for the kooks headers. i went to ford to get new factory manifold bolts but they had three different sizes (in length). i did a search but didnt know what type of LT was being used. any info. would be nice. i bought them from jdm and was trying to make plans on when going i can make to the dyno. will let everybody know about hp and tq gains with the mods i have. the next project will be whipple.epper: