BDS871Cuda, the Zeekers are the predecessor to the Indy 440-1, they take the same rockers, valves, etc. Indy bought the mold from Zeeker to make the -1s they can flow about the same as a fully ported set of -1s. That's what I ran all last year and they made good power and I didn't have any issues with them. If you ever order HS rockers for -1s you'll notice the part number has a Z in it, it's because they were designed for the Zeeker heads. Mine didn't have the porosity issues that some sets had, didn't have to use shims or anything special.

Mine already had the rocker shaft pads cut down and use square blocks that mount flat to the Head shaft pedestals. Here is a pic of the HS rockers and the blocks.