So you guys know- Gene Berg Ent. has never officially assembled engines for customers. They sold parts (a lot of which was their own manufacture), and although they built engines for themselves (drag racing and testing in theirs and staff's street cars) there was never any point where you could order a complete engine built by them. Gary, Clyde, and Doug Berg (the sons) all left the family business at different times 20-30 years ago. Gary and Clyde presently build engines, with Gary also doing transaxles while Clyde specializes in head porting. A few years ago Doug was back with GBE but if he's still there I know not.
Anyone who says they have a Gene Berg engine has at least some parts from them. At one time (the '80's and '90's) you could buy everything from them, including Swedish forged counterweighted crankshafts and rocker arms (the forgings done in the same factory that did forgings for Porsche, Mercedes, BMW and I'm sure others, and then machined by GBE), which were exclusive to them. Those crankshafts and rockers are still considered the best in the business, and the longer stroke cranks especially command a very good price whenever one comes up for sale.
PS- Gene believed the stock doghouse shroud (with flaps and thermostat) with the original engine tin set was all an engine needed, and would NEVER have sanctioned that 911 style shroud on a type 1 engine (in any car- I'm sure he's rolling over in his grave as we speak!).