I'm tempted to say, "the more you ask, the slower it'll be," but the reality is, I expect we'll be selling Gen 5 boards "naked" within the next couple of weeks.
However, I do need to note: these are not "self-install." These, like all of our upgrades, are for installation by qualified electronics professionals. Disassembling and reassembling an Yggy is not a trivial job. We've had many cases where "self-install" has resulted in the need to ship it back to us for troubleshooting and a significant repair bill.