Long valves on W2's with .600 lift?

Wyrmrider said
Lunati sku74820-1 $10
mike @ lunati claims PAC
says do not need seats
ok to set up @ 1.950
says nitrided version $15 not needed
says to not have to be set up tight to coil bind but could be
good news on the valves
cheers

Certainly sounds like this deal will work except for the locks for 4 groove valves. Not a deal breaker by any means.