Well, I'm not really sure if the Mullet can take 140mm, i've read reviews on the bike of some people saying that they upgraded to a bigger fork and have no problems currently. That's my only hope. Also the geometry of the Mullet suggests the capacity for a bigger fork. What I mean is, the frames angle would be higher and i like high-rise frames, stuff like roadbike angled frames kill me (hurts my back).So 140mm, hopefully, will fit without fatiguing the frame. It just makes it easier to bike, also high frames help especially for climbing in my opinion.
thx for the help so far, u guys r gr8!