You would have to be Houdini to get the lower nuts onto the manifold head studs Brule.
i hope you get some results for effort out of it!Im better off pouring concrete for money.
The photos are of around 9 days work 6-8 hours each day.
Runner 3 bottom will require stud to be cut to get nut on it. Probably a half hour nut tightening session on that one.You would have to be Houdini to get the lower nuts onto the manifold head studs Brule.
Good result = Sound improves.i hope you get some results for effort out of it!