Sorry to say but most (NOT ALL) employees of those big box parts stores know no more about a car than their computer will tell them .
If you really wanted to mess with their heads, just tell them you want Honda car brake pads to fit your Yamaha motorcycle , blue smoke will come streaming form their ears within seconds !
Actually, the Honda pads won't work, its only the hub assembly and stub shaft that are Honda. The rotors and caliper mount bracket are a 1 off product made for Hannigan, as well as the half shafts from the pumpkin to the hub.
The differential is from a T-Bird. Be sure to check the bolts from the driveshaft to the differential pinion flange, they are known to loosen themselves and disappear.