RE: Watts Suspension
Watts suspension? All I can think of is a watts link for anti sway {lateral}.
Wish I knew enough about this new fangled thingamabob to make a drawing and post it, but no.
There is a vertical link at the center, pivoted at the center, with equidistance ends above and below. One ended is linked by horizontal bar to right frame rail with pivots both ends, the other to the left the samw way.
This combination allows vertical movement unrestricted, and positively prevents any side sway! Works great, but complicated to set up and find room to mount. Also unneeded on our MK*s.