The best replacement for 6.0 is 7.3.

The best alternatives to 6.0 are rated as following:
★★★★★  7.3
★★★★  6.4
★★★  5.3
★★★  8.1
★★  6.2
★★  duramax
★★  7.3 powerstroke
★★  6.4 powerstroke
★★  6.7
★  5.8 ghz
★  5.9
★  5.7
★  6.6
★  7.3 diesel
★  7.3 excursion
★  ls1
★  5.8
★  6.2 vortec
★  454
★  6.7 powerstroke
  6.4 diesel
  7.3 ford diesel
  visual basic .net
  7.3 mpg
  7.0
  7.3 for towing
  8.1 vortec
  5.3 mpg
  dect 6.0 plus
  2.4 ghz
  dynamic gold s300
  .net
  6.6 duramax
  s300
  5.5
  8.1 chevrolet
  6.1
  5.8 phones
  dodge 5.7
  5.0
  act 2005

Your alternative for 6.0 is not listed? Suggest!
Speaking about 6.0, one probably shouldn't forget about allison.

Other search terms related to 6.0 and their ratings are:
★★★★★ allison
★★★★★ 4l60e
★★ sct
You have in mind a companion for 6.0 and it is not yet here? Propose!



Google Trends

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6.0
7.3
6.4