Well after running the VXL system for a week I must say I'm disappointed in the power. I just put a hobbywing max 10 80w in my Koyosho fazer mk2 70 chevelle and it runs like a complete different car! Love it! I'm buying another one to try in this 4 tec. instead of the VXL setup. Hopefully It will fit in the 4 tec. I think the 140 amp motor would be to long to fit it that space and may be too much power to keep it straight when hitting full throttle. Plus breaking parts lol.