Re: Really need advice on this
Dont put a new one in front of it. There is not enough room in there to cope with both, you'll just end up cracking your block or stripping the thread.
There are things called 'ezy outs' that will allow you to remove it, failing that I would go to a bolt shop and get a smaller left handed bolt and tap. Once you have drilled and tapped your snapped off bolt, just do the leftie up. The left handed bolt will remove the old one while you tighten it up!
Just like a Tsunami.