I got the Maxx 171. It took a couple weeks to build them but Boom they were here right after the shipped notification.
Great customer service. The customer service people are right there at the shop. I called to check on the progress and the guy says" let me go talk to the guys in the shop." After a little wait on the phone he says that the guy says they will be done Bla Bla bla and sure as hell they were. I mean these heads had my name on them.
The web site says the 171 will ship in February but that is wrong. He said they have a bunch of blanks in stock and not sure why the web site says that about February.
They look phenomenal with a little fresh grease hanging from the valve guides.