I'll have a few finalized units of the "pingless" valve in my hands next week but they won't be in production for a bit but that is a different valve designed specifically to address the noise, the RSR valve is our "top of the line" universal valve. We can build them with 4 different side ports (28mm for the MS3/6) and about 20 different bottom ports and flanges, one of which fits the MS3/6, and they've been available since before I started with the company, so its not really a matter of interest sparking production as it is people starting to order them for the MS3/6.
Doesn't ping, doesn't hit the shroud, doesn't hit the hood (although it is CLOSE). The flange to discharge port height is a bit more than the OEM valve so the recirc tube fits just the slightest bit off kilter but it isn't very noticeable.