Well I Got My Exhaust Manifold From Js Manuf. Back I Bought It From 12secsy , Good Weld Job! As Mine Was Cracked , I Am Recovering This Weekend, From Last Weekends Install Of The Right Side Exhaust Manifold Install!! What A Pita!! It Took Me 2 Days And Lots Of Beer And Patience! If Anyone Is Planning On Tackling One Of These Jobs Get A Manifold Spreader It Will Save You Lots Of Headaches! When I Took Off The Old Manifold It Fell Apart In 2 Pieces, Cracked All The Way Around.the End Result Was Worth It Truck Runs Great Now! Thanks To Js And 12secsy!!