Ok, rack installation is complete. car at alignment shop this morning.
Just a few notes if anyone is contemplating this.

purchased rebuilt rack from rack doctor online. unit was correct remanufactured Volvo item. only two hitches [supposed to include new o-rings for pressure lines...did not. rack mount hole grommets were a bit "wallowed" out so the oem splined headless bolts really would not tighten; had to use new different hardware.
-probably worst part of job was undoing and redoing the pinion shaft to lower steering shaft. took a lot of time and patience. Aligning it is tough too as you cannot see it and it is kind of a trial and error thing.

refitting the subframe was a pig too. it shifted slightly while dropped and jacking and fettering the fit was time consuming. I did use new mount bolts [they are one time use when torqued and angle tighenend]--once stretched are not to be reused. Honestly, I think I could have re-used the old ones but probably not recommended.