I think that old post was from George Brown, a prolific contributor to this site years ago, and a real aficionado on all things speedster. He passed away a few years back. Hopefully his numerous and helpful knowledge section posts have been retained somewhere on the new site. Below are the alignment specs I got directly from IM (to be set with a full tank of gasoline, and proper ride height already set):
Front camber: -0.5 degrees
Rear camber: -2 to -3 degrees
Front toe: 1/8 inch to 3/16 inch toe in, measured at rim
Rear toe: 1/8 inch to 3/16 inch toe in, measured at rim
Front caster: 4 to 5 degrees; similarity from side-to-side is more important than actual values; vehicle pitch greatly influences caster