STRUT ADAPTER PLATE
allows for use of 86 struts on thinner 87+ spindles

take a piece of steel plate, .23" thick (or two pieces, .115 each)
and cut it to 1.25 x 3.50 in size. Bevel one corner with a .25 angle.
        drill 2 holes .640 diameter, 2.25 apart, centered on the
center line of the plate, with the first one .62 from the beveled end.
 

     <-------------3.50 +/- .10 ------------------>
      _____________________________________________
     |                                             |  ^
     |                                             |  |
     |<-.62 ---->                                  |  |
     |           +    (centerline)   +             |   1.25 +/- .10
     |                                             |  |
      \                                            |  |
 bevel  \__________________________________________|  |
(.25)                                                 ^
                 <-----2.25 +/- .03 ->