[LeighP]

I found it pretty simple to get the frame back up, bolted on, aligned etc. Even using those rigging holes in the firewall mounts, there is a bit of wiggle room.
With the frame supported and pins in place in those holes, measure everything (see the manual for the measurements and where to measure from/to).
I just bumped it a little here and there making sure its all square and everything measured right.....did it by myself with a trolley jack, took about an hour. Surprised me after all the worries I'd heard about it.