I based off the original staircase that was built from 2" woodstock. I'm looking at redoing them though and shortening the run by 8 inches to allow more head clearance to the ceiling joists at the base of the stairs so tall guys like you won't have to duck as much when you descend. Plus it will make getting things up/down out of the basement easier.
I just found a wood working saw made by Festool that is called a tracking saw. I functions as a circular saw, but then you can also slap the 42" (other sizes as well) track guide on it and hold precision angles and cut lines. I got a "woody" when I saw it demonstrated. Also found that they make stops you can put on a framing square that allows you to set your rise/run and simply mark and slide down the 2x12 for laying out. SUPER FAST! and accurate.
BTW - I wouldn't attempt to make a 6R80 transbrake kit on a later model Coyote or rebuild a shortblock so we are almost even. You still have the more coveted edge though IMHO.![]()