Both are recommended with any lift over or around 3inches. The CV joint angle gets too extreme with higher lifts and some people experience binding or premature wear on the joint and the boots.
just wondering if you spliced the engine wire harness end pins and pigtails when you replaced the transmission harness or were you able to clean it up? also, do you need to remove the front driveshaft and the valve body to remove the trans wire harness?
