I'm looking at the directions from Ground Control to install the lower spring seat on the strut housing, but I'm not clear on something. The picture shows the seat being welded 3 inches from the "top" of the strut housing. Am I supposed to cut the strut housing at the weld to the stock seat or just remove the stock seat, leaving the top of the strut housing where it is as stock? I was under the impression that I needed to cut straight across the housing at the weld of the stock spring seat to shorten the strut housing. However, if I do that, how does the strut top nut screw into the top of the housing? The strut wouldn't seem to work unless its connected to the strut housing. The directions don't say that I need to rethread the top of the housing.

Please help. I had been set to have this welded tomorrow, but now I'm not sure how to cut the damn thing.