Balancer Replacement
You can get a BHJ balancer from SuperCoupe Performance (I think). It is a pricey unit (about twice the cost of a stock aluminum balancer), but after you go through the process of removing and replacing a broken one you will never want to have to do it again. There are basically 2 methods of removing the old broken balancer. One way is to remove all the accessories and bracket on the driver's side, then the water pump, and timing chain cover to get access to the balancer "sleeve" that is remaining on the crankshaft. The other method is to remove the seal on the front cover and pull the "sleeve" off the crank through the opening. I have used both methods and I prefer the second option if you can do it. You will also need to back out the broken balancer bolt from the crankshaft if it sheared off.
Remove the drive belts from the crank pulley and give the balancer a good yank. If it is broken, it will almost come off the crank in you hands.
Let me know if you need some step-by-step instructions on how to do this R&R. It ain't fun, but if I can do it, anyone can.......