Will the mpbrakes rear drum upgrade fit an 87 GN

[StealthRider]

I saw this rear brake upgrade on mpbrakes website will it fir our cars? Here is the link http://www.mpbrakes.com/dr1700k.htm

 

[turbofish38]

If that is the correct backing plate shown in the pictures than no. It has the incorrect 4 bolt mounting flange to make it a bolt on. Kind of like what you would have to do to install 4-wheel disc from an F-body.