erm i'm not 100% sure what you mean, but i'm pulling my enigne out my Mk2 and i've taken all the bolts out, thing is half of them were missing, but the ones that were in can be a pain, so for about a week everyday we soaked them with WD40 or something similar and they came undone easily, try to find the best fitting part, if you do end up rounding htem off then taking the gasket cover and head off isnt too bad, but then again neither is taking the manifold off. My advise is to just go for it, dont regret any of it, just have a try, there's always a soloution.