If changing a automatic equipped car to stick you need to take the automatic flywheel and the stick flywheel to a shop that can balance them. Have them check both for neutral balance. If they are neutral your work is done and you can put them back wherever you like. If one is not then the new fw must be matched to the existing one (for the engine you are using.)

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.