I am wondering if anyone has used the Big Red Mach 2 motor? I bought a OFNA Hyper Sprint with the macstar engine on it and blew a hole in the top of the piston. I am looking to get a new motor to replace it. I found the mounting dimensions for the macstar .28 but can't find one for the Mach 2. Anyone know if it will fit? Or know of a better motor that would suit me better that would fit? or a better motor overall?