Pro Topline IS out of business(in receivership) and nobody is casting those heads under a different name. There were many sets of PT heads cast and a huge amount made it to the US.

I have 2 sets of the PT's. I have 1 set of 215/64 irons and a set of 215/64 aluminum. My iron heads came with the pushrod hole sleeves installed and is quite a nice feature. I ported them and they are now 237cc intake ports and had them angle milled .115"for 52.5cc chambers after opening up the chambers to unshroud the intake valve side of chamber). They are on my solid roller 392 and should find out how well they run this coming weekend compared to my heavily ported Windsor Sr heads I had on there although I also stepped up to a Super Victor intake too with the PT heads.
My aluminum 215/64 heads are on hold until I find out how the ported iron heads perform. I had the irons almost finished when I bought the aluminums which is why I am using the iron heads right now. My alum heads do not have the pushrod sleeves in them. The bare iron heads had a protective coating on them that I had removed by vatting. The bare alum heads I have do not have nor do they need this protective coating.
[addsig]