I would look at putting coil on plug instead of the mag , it is simpler and less potential to go wrong . With the BS3 you would get traction control and a starting line retard built right in when you switch to the LS1 coil on plug system . It has a 24 tooth pick up wheel on the crank so timing is extremely accurate . My car sounds better better with the Coil on plug spark system than when it had a MSD 10 , not sure why but it does ? It end up being cheaper and has more options than the mag . Just something to think about .