Mike's motor mount should fit the all mp777 (sp1, sp2, wc) I think as the only difference between them ischassis length and shock towers (any some others). But the center diff is the same so it should work. I have an mp777 sp2, I like the look of it and it seems pretty durable. Only issue is parts.... Non of my local rc shops carry kyosho, so my best option for parts is ordering from amainhobbies.com (they are on west coast, I am on east coast). ALso kyosho parts tend to be priced a little higher then most of their competitors.