Congrats on getting it all back togeather and drivable. The flywheel won't be out of balance but if it wasn't surfaced properly it could have a wobble this isn't very likely. You can check that with a dial indacator on its face surface (pressure plate side to check for any runout. Drive shaft is a possablity test it with the car securely up on jack stands run it in gear watching for any sign of wobbling up and down or turning it by hand use the dial indacator both next to the front yoke, at the rear yoke and also in the center checking it for any run out. One other thing you should check and maybe the first thing is that of your wheel and tire balance. Good luck and I hope you enjoy your new 5 speed.