We have put in a Generic in the past with very good success.
If possible you should look into a duel fuel system. I would try to have Natural gas or propane for the primary and then Gas or Diesel for the secondary. These are relatively simple to install and work great.
If you do put one in you will need to run the system every month or so to keep it in good shape. If you don't start the system on a regular basis the gremlins will move in.
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Ferrari Killer
Steve
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