If you are going to get head assembly, then dnt get this y6 again, its ukdm engine, get replaced with y8 or zc, both are obd1, you can work with that block, get d15 block, use ur stuff, but as u mention tat there is dent on head, life of such minime will be minimized, so get headassembly swap n stay free, n do post the pix of head so we could see what exactly happened.
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