Letzbang,
Are you getting the rear powder coated?
If yes, you will need to run a sizing drill through the holes you will use for the four link. If not, you will be spending a lot of time trying to get your bolts through the holes.
I suggest you find a nice grade 8 bolt supplier as well. Grade five is good, but, in this case, grade 8 should be used to attach the rear to the chassie.
Did you get the shocks?
Just my $0.02
