the gears are great as long as you dont plan any high speed trips,however,if you put that gear in w/only a one legger,open diff, it might even hurt you,it should want to spin more in 2nd and maybe 3rd.Try to find a posi unit if you want to drag race,as for the ignition stuff, try mallory or accel,they make good stuff.I must say though,the gear swap will be the biggest seat of the pants difference you will ever see other than major mods.I'v been doing this a long time,once your used to the diff. try squeezing it with a 75 shot NOS fogger,that take atleast 1/2 a second off your ET.