I am looking for a more powerful engine to upgrade my Cen MG10 TR. In it now is the new Cen .15 engine that has a slide carb, side exhaust, extra long SG shaft and mini flywheel that has about .6 HP. The mini flywheel and xtra long SG shaft on this CEN .15 is of an odd design that differs from most manufacturer's standards. I have tried to fit up other similar small block SG slide engines like Traxxas 2.5, 12 Ofna, and 18 Orion and find that CEN must have created their own standards so that only their engines can fit into their plastic chassis design using their super extended motor mounts. The only engine so far on my engine research that looks like it may possibly fit is the OS .12 TG-PX. Anybody have any engine suggestions to try?