I forgot to mention that I got 3 1/8" tach and speedo because they were almost half as expensive as the 3 3/8". The only problem was that the bezel was cut for the 3 3/8", so my gauges fell right through. I contacted a guy named Doug Davis who owns a CNC shop here in CA and he made me some adapters off of a drawing I sent him. He got them here in just a couple of days and were reasonably priced (way less than the larger gauges). If anyone needs some custom CNC parts made try contacting Doug at
cncmfg515@aol.com or 909-592-2541. He is a great guy and very helpful.