Exhaust manifold gasket

[alexnav2395]

hey guys

i was driving at about 120 overtaking, coming from a long drive and hard 4wding.

as i was driving i heard a hose blow and air coming out fast
i pull over check it, sounds like my car has no turbo and sounds like a v8 but a horrible noise, i went to an ex nissan specialist and he think 90% its the exhaust manifold gasket,

i was just wondering if anyone knows how much it would be to fix if it is that?

 

[tweak'e]

i would suspect the egr tube has broken.