I'd always thought no but in a recent thread (reusing cometics) there was a post that you could with FP also. My situation is the eng was refreshed & then a head had to come back off before refiring & I wouldn't have a problem just purchasing another gasket but I did alot of cooling hole redrilling which then required smoothing the holes with a dremel which all in all ended up being a very significant amount of addit'l hours & if there is a reasonable chance of it being good I might chance it. Eng has not been fired. What do YOU guys think/suggest? Thank you for your time.