I have a crappy auto tranny in my 95 LS that can't rev past 3k rpm in 2nd, 3rd and 4th gears and accelerates past 80mph at a blazing 1mph/sec . I was wondering how much it would cost to swap for a manual LS tranny or even for an auto replacement. Is it worth the risk picking one up from a junkyard, or should I search for rebuilt ones or possibly rebuild mine? What is the cost differential between the options? Any place online I should start my research on first? Is it too optimistic to hope for a procedure that'll cost me under $2k total?