We did two entrance walls like this last year (picture at the top of one wall).
The company (anchor) did not have a two sided 3 piece wall unit at the time so we also had to split retaining wall units to create a double sided 3 piece. This batch of wall block also had large inconsistencies in the height of each unit so we had to do lots of grinding. This year they have a double sided 3 inch unit and the blocks are much more consistent.
We built a plywood template so the two walls would match on either side of the driveway. There was ALOT of grinding involved in this project and we actually made a temporary "jig" to cut the blocks at an angle. Every course was glued and the columns were filled with 57 stone.
The walls were originally going to be natural stone (much easier), but the customer wanted the SRW units.
