I'm thinking of getting the 18 cir. for non GM columns. This seems to be the on a lot of you guys are running. What if anything would you change with it. Are the leads long enough, Does the wire contour nicely, and does it go to the engine and gauges or is it just a body harness?? can I add on a guage and engine harness? If so does it just plug in or is it a cut and solder set-up.?? Thanks for the help I'm getting so close now it hurts!!!! by this summer I should be debugging this baby!!!!