On my '87, I took the manifolds off and tapped for pipe plugs including the o2 sensor in the driver's side. I had to get a new Y-Pipe because the original was butchered beyond belief. This is actually an intermediate step because I want to get some block-hugger headers and eventually evolve into a single 3" exhaust.
1986 Dodge Ramcharger 440 2wd, Bracket Racer Under Construction 1998 Ram 2500 QuadCab, new daily driver. 2008 Honda Element 2014 Carry-On 7x14 Cargo Trailer