I’ll keep an eye out for the LS specific stuff you’re after, but I’m not sure when the next time I’ll be hitting the junkyards again.
As for the door seal channels, are you referring to the ones that the upper window weatherstrips (roof rail seals) go in? If so, I might be able to help you out without a trip to a junkyard. I’m pretty sure I still have the ones from my old Brown Bomber parts car tucked away somewhere, I don’t think they changed all that much from my ‘78-80 cars to your ‘81 & up Regals.
Let me know.
The channels themselves are actually two pieces per side, the one mounts to the underside of the roof by the drip rails, and there’s a second, separate piece that mounts to the front edge of the “B” pillars.
Much appreciated man. I’ll have a look when I get home. Might only need one side, I don’t actually remember at the moment.