spoons right and wrong! iput batts in the back of two cars one i made the kit the other i got form a race shop the stuff i bought was the same as the stuf i got in the kit so after i got the kit thinking i was getting something better i was not impressed ! the big thing is that you have it bolted down realy good and you vent the gases out the bottom batt fumes are not good .. you don't always got to got buy a kit if you ask question before you buy the stuff ..o also big wire if you can your changing the distance from the batt to the motor