Maybe it just seems that way to me, as the FE is my main engine of choice, but there have been numerous companies that offered some great products for FEs, only to have them disappear, or discontinue them. Obvious examples are Genesis, SideOiler Garage, for FE blocks, it certainly looked like BBM was going to finally be a reliable source for new FE blocks,heads, and intakes, based on their great looking photos of a huge, modern facility, but like others, seems almost all their FE parts have been on back order for far too long. I bought a set of the new Erson FE roller rockers when they first came out over 20 years ago, but they too disappeared some time ago. Dove is gone, Edelbrock, which used to be about the most reliable source of parts for a wide variety of engines, has been very spotty the past few years, Lakewood stopped making FE bellhousings almost as soon as they bought out QuickTime, and raised the prices on QT drastically, it appears that Blue Thunder has almost disappeared from the market, and much of the stuff from various suppliers (for all makes), has gone from high quality, reliable, American made products, to garbage farmed out offshore, to the highest bidder. I am sure the Covid deal was a large part of al this, but many long time businesses getting gobbled up by "investment groups" certainly isn`t helping, especially when it comes to engines like FEs, which are more of a small niche market, compared to big and small block Chevys, LS`s, SB Fords & 460s, etc. I hope things improve soon, but I certainly am not holding my breath.

You want to avoid the DR4, which is the older Jerico that is no longer supported by them. There are quite a few parts out there for them, but you have to search and hope you get lucky. The DR4-4 is the newer design that they have, and supply parts for. And yes, it's really stupid of them not to support the older version. They basically gave a giant middle finger to anyone who bought their older design. NOT a good business practice.