Installing a Buddy Seat, where only a solo has been

[RandyS1122]

Is there a publication I can go to, purchase, download, what ever to see how to install a buddy seat on a 1948 HD 45 G model Solo?

[Hollywood]

There is a pretty good picture and details in Palmer's Restoration book on page 460. attached is a pic of the arrangement.
IMG_1576.jpg

[Hollywood]

Here is another pic of the seat install from below.
IMG_1578.jpg