Matt, I believe they are reproduced now, in the correct green color too, but I don’t know if they come with the red gaskets. I don’t think I have any originals left. I believe I used my last 2 on the 69 car. Duane
ILT repros some in metal but they are a different stamping compared to what Matt shows (Matt's are the "smooth" style). ILT's look like another version GM used with a large depression in the center.......here's a link to the ILT style plugs over at SS396: https://www.ss396.com/chevelle/BPP-70Q.html Not sure if anyone is reproducing the "smooth" style like Matt shows....same thing I have on two '70 Olds's here as well.
Patton, Got ya, the ones that came out of my 69 were identical to the repros you linked to, so I used the originals I had. I didn’t notice Matt’s were different. Duane