NO NO NO!!!!!!!!!!!!!!does not equal Promaxx or Sidewinder!!!

The Speedmaster heads are the ProComp heads, ProComp changed their branding about two years ago. It's no secret, ProComp announced it back then.

The Sidewinder and I believe Promaxx and probably some other names, are better heads from a different Chinese facility. The owner has actually been on this board to explain that.

But the way the marketplace works is that you get online and you can order up a pallet or container or sometimes as few as one pair of quite a few different heads from China, they're not hard to find. When they get here you can call them whatever you can program a CNC machine to spell. Or possibly buy enough and get a custom label cast into the heads.

I believe you can even buy replacement Cummins 6BT blocks.

Anyway, just be aware that ProComp is now called Speedmaster. Most of the part numbers are even the same starting with a PC.

R.