I have the 7747 ECM set up, and am close to finishing up this never ending project I hope. My question is, what issue will the lack of VSS do as far as tuning? I havbe a 700r trans, but it is set up with a pressure switch conversion to control the shift points, and the converter lock up is done like this as well, with the lock up working off the brake switch. (Street rod conversion I guess). I had this same set up in a v8 s10 blazer with a 327 and LUV'd it, but the engine was carbed on that one. Trans has a mechanical speedo if that makes any difference. Thanks.