no.
1969-1976 K is one set of mounts. 1977-78 K is another set and 75-8 F is another, and 77-78 is also different.
There is some interchangiblity ( one side of 77-78F will interchange with 75-76 F but I forget which), but generally there isn't a lot that interchanges back to 69-76 because of the oil tank cap on the right.
The left might work, I would think if it is a custom part it is probably engineered to fit with some...ahem...adjustment.
I just looked on joker machine's site though....why on earth would you want that?