I didnt figure the stocker to be a great mill, but since I already have a savy and truggy built for speed thought about using it just to save the project of conversion. A little suprised nobody makes a conversion kit, or motor mount to allow for regular BB's to fit in this truck....seems odd the 7.7 is the ONLY option unless you self modify. Can .28's, .30's, .32's push this truck around being 17lbs? Iv read 27pos's posts, but was hoping to find a few others that have BB's in their CEN...Good to have more that 1 testimonial