Hi, quite new to this site but I'm wondering if someone can help me with an issue with snapped bolts on my Freelander 1 TD4 air intake manifold. Whilst installing the thermostat mod in the top radiator hose two of the intake manifold bolts have snapped ,one whilst undoing and the other (my fault) by over tightening. I've managed to remove the bolts in the engine but no idea how to remove the broken bolts from the manifold as it seems they have some type of heel attached which I presume is an anti loose type of protection. I have a donor manifold which is cracked but again not sure how to remove the bolts.....any ideas?