what gaskets are you guys using? the original one on my drivers side was the copper/brass press ring and it doesn't look like there was one on the pass. side...isn't it supposed to be the donut style? i looked on that stickied thread of part #'s but didn't see anything for truck exhaust gaskets

 

Im not familiar with the RST trucks or JBA headers but IF it helps the OE seals are #15035747 on the passenger side and #15077362 on the driver side. And yes, that RH seal is a donut type.