Thank you guys!!
I'm taking it easy and slow.....
Today I got a little help so we got the rearend out and the front springs out (again...)
Took the frontsprings out, because I first want the truck at rideheight, chassis leveled front to rear and left to right.
Put on the frontwheels, set the Jag IRS in his future home.
Now I can measure everything up.
If that's done, I temporary put the engine in to set the pinion/trans at the right angle.
Everything must be done in one "flow", i think, to get things right.
A straightaxle is much easier...but I love a challange now and then
Tommorow afternoon I get back to it, stay tuned