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· Premium Member
195 Posts
The general consensus is that they're overpriced and may in fact not be as good as the genuine gm part. I can say from personal experience that the summit/accel unit is junk. Thepartsladi carries real gl optis for about the best price around.

I don't know how high you intend to spin your 383, but even the gm unit can break it's rotor. I ended up going the ltcc/distributorless route and haven't looked back.

Good luck with your build!
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