79in I am retired auto tech (45years) for about 8 yrs no racks all creeper work
I use tape measures ,squares & plumb bobs , also eyeballs (yea no laser, no fab table ) just old school. Finally got the rear seats in they lay down & tumble ( seat install took for ever) not sure what next - figure that tomorrow have to look at my list ( I’m on my 6 or 7th list more than likely be at least 100 + list to finish) Rich