The best replacement for ls2 is ls3.

The best alternatives to ls2 are rated as following:
★★★★★  ls3
★★★★★  ls6
★★★★  ls1
★★★  ls7
★★  ls6 intake
★★  lq9
★  l76
★  lq4
★  ls3 heads
★  ls3 corvette
★  l98
★  ls3 engine
★  ls6 heads
★  ls1 intake
  ls6 cts-v
  ls6 intake manifold
  l92
  spyder

Your alternative for ls2 is not listed? Suggest!
Speaking about ls2, one probably shouldn't forget about ls3 heads and intake.

Other search terms related to ls2 and their ratings are:
★★★★★ ls3 heads and intake
You have in mind a companion for ls2 and it is not yet here? Propose!



Google Trends

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ls2
ls3
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