You need a 9/16" crowsfoot adapter, redily available from the flaps or your favorite tool dealer (Snap-On, Mac, Matco, etc) The specs are as follows, inside bolts next to heat riser-25-30 ft/lbs, oustide and middle bolts-15-20 ft/lbs. I also swappwd out the 2 end studs for the exhaust manifolt out to bolts, and torqued them to 15-20 ft/lbs to help prevent exhaust leaks at he ends. You should be able to get to most of the bolts with a regulat socket, it's the inside bolts that get tricky and require the crowsfoot.
