It is not as easy as it may look. You have to pull the oil pan to get the timing cover off to change the seal. There is a Tech Tip on how to solve that problem, but in the meantime, removing the HB, oil pan to get to the two screws that are holding it in from the inside, then slide it out. Personally, I like the idea of the stainless steel speedy sleeve to ensure it doesnt leak again. Going to all that trouble, why not have the extra insurance?
It is also important how you put the timing cover back on. You need to leave all the bolts loose and tighten them slowly moving across from the one you just tightened. Let the crankshaft be in the center of the seal. If you center the seal on the crank, you won't have leaks.
