MD the 5K actually includes the 11.5" willwoods.
I did get a quote for a complete mustangII coilover suspension with QA1s and willwoods for 2K but no Kmember, or sway bar. This is essentially a street rod setup. there are a couple of "universal" cross members for 400 ea. I called Bill and he wanted $1500 for just the K member with the sway bar. I am still very undecided. Scrimping on the front suspension seems a questionable route and getting the geometry wrong just as dumb.
Andrew
