Thanks jordan! To answer your questions, yes the spur is mod 1 - it's a Kyosho 44t from RCM. And you're right . . . the end bell is bigger than the standard motors. It's roughly 2" diameter at it's widest point vs 1.56" diameter for a smooth can (not sure the finned diameter). The length is 3-1/8" vs. the typical 2.7" too. Oh, and by the way, the "F" version stands for "finned". This motor is technically a heli motor with a finned can so it's has the F & H designation. The heli motors have this type of end bell with the fan built in.
Oh, and one more thing . . . you're not a pain
Hope that helps.