D585 Coils
In your search, did you see the stickie?
https://ls1tech.com/forums/generatio...l-upgrade.html
As for reasons not to use them: cost, needing modification to brackets and bending fuel rail slightly, aesthetics (I find them ugly compared to stock coils or square truck coils), and needing tune to adjust dwell to see the full benefit of them.
Things easily overlooked if they gained HP consistently but there is little to no evidence that they do. Not that there is anything wrong with running them but not something worth going out of your way to get and install IMO. But yes the sticky has all that information and OP can decide for himself if it's something he would like to do.
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The Best V8 Stories One Small Block at Time
Post one in it details how it's not plug & play without first doing a few things. Not hard stuff tho...








