Took the SHO in for an alignment today post Megan Coilover install. I drove the car for about a week to let things settle before taking it in. I purchased the SPC 84130 adjustable rear cam bolts and the mechanic didn't mention any issue with using them. I have not looked at the bolts and nuts post install but the mechanic didn't mention and issues with the nuts being too tall as was the case with the 81280 part number. The shop also adjusted the ride height on all four corners to match pre alignment. The mechanic was able to get everything but the rear drivers side camber within spec and that is only out of spec by 1/10th of a degree so I am not too worried about it. Also, had the shop rotate the tires since I had been driving out of alignment for a week or so while things settled. Hopefully, I can add a few notes to the Megan Coiliver install thread to clear up a few confusing points I ran into while installing the coilovers...nothing major but some things that could definitely save future installers some time. -Jeremy