I am putting a 455 in my 68 a body. I need to put some sort of simple traction control on the rear springs. I put in new erlich springs that lowered the car about 2". I will not really be hammering on it very much as I am retaining the 8.2 rear end but will run it in the quarter once and a while(oldies drags) and don't want to deal with wheel hop. However, since 99% of its life will be on the road, I don't want to sacrifice driveability. I am also looking for a posi unit. It has 3:23 gears thanks to the 6 stick it now has. Should be a perfect ratio for the turbo 400. Thanks, Ted