I'm suppose I'm guilty of having more tools around here, that have only been used once or twice, than I should. And I've made stuff that duplicates the function of expensive tools. Either way - engine, trans, rear, chassis, whatever - having the right tools makes a big difference. If I have to find a good used tool for the cost to make sense, I will. So much of this stuff can be had cheap on ebay and other places. Transmissions are one of those thing things - you never do just one, then never do another in life.