Recently purchased non vvt cast 5.3. I plan on swapping out my 4.3 with it. The engine did not come with pcm or foot pedal. Would it be worth buying tcm, pcm, and foot pedal or could I get by with just pcm? Also was wondering with that engine being an earlier model than my truck would there be any issues matching harnesses and controllers or is it all pretty much the same? Also any other advice on my swap would be appreciated