I have an 06 5.7, and I need to know if there are head studs available for the top row of bolts. This is the row under the intake. Additionally, I need them to be a little taller so that I can use a second nut to fasten brackets to. I don't want to change over to all studs, I just want to change the top row on an assembled motor. Can someone tell me who makes these and is there a specific part that I need to ask for? Thanks.