273 rockers on 340 with hydraulic cam

Just a general word of caution-don't assume. Check everything out. The 273 arm assemblies I bought were oddball (maybe very early production?) that had the shaft oiling holes clocked way different than anything I had ever seen. Somewhere around the 4:00 position instead of at the bottom. I redrilled my shafts and banana grooved them at the same time.