Headgasket or head it self??

I Have a 96Chevy Berreta and I know it's either my head or the HeadGasket that needs Rep. But my Qest.Is that mMy ex-Boyfriend told me it has an alluminom head on it.So is that a bad thing or is it just harder to get a new one if it is? And if it's warped can that one be fixed instaed of me having to buy a... show more I Have a 96Chevy Berreta and I know it's either my head or the HeadGasket that needs Rep. But my Qest.Is that mMy ex-Boyfriend told me it has an alluminom head on it.So is that a bad thing or is it just harder to get a new one if it is? And if it's warped can that one be fixed instaed of me having to buy a new head. The car isnt worth all that.It has a 3.1 and its a 6 cylinder. Z26, blows white smoke mustard looking oil, and gets hot...but has not over heated...i stoped driving it to get it fixed.it hasnt been drove in 4 M..
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