I put
some new life on the old manifolds. The special paint claims to withstand tempereatures of up to 760 degrees Celcius! They were still shiny when I took the "after" pic, but have dried up well since then. The flat grey is supposed to be just like the original look. They will need a second coat after 24 hours. Of course painting will not solve the other manifold problem. I hope to have found a shop that will cure the crack on one of the manifolds, if that dosen't work out, I will have to finde anoter one. 
