So after two years of nothing being done to my Yerf Dog i'm going to try and fix it myself with diffrent parts then originally planned. So what my older brother has done is weld a engine mount plate and drilled a few holes. When was to large and made it difficult to put on my 40 series torque convertor. He also struggled to put the pillow bears i had on ad even got the jackshaft stuck inside of one. Anyways i was wondering if i should just get a smaller engine. Thinking about getting the predator engine and a 30 series torque convertor with a back plate so no need to deal with pillow bears since it's a tight fit. He always complained about not finding the right sprockets when i bought the right ones so have to buy new ones since he put the one's i bought back in his pile of junk. Pretty sure this go kart has a 40/41 chain. Also a few other things he took apart but for not going to worry about engine and torque convertor.