<div class='quotetop'>QUOTE(86 Silverado LS1 &#064; Nov 20 2006, 10&#58;10 AM) [snapback]73938[/snapback]</div>
As far as my plates, I got them off ebay for about &#036;50. They are the same as the S&P mounts except steel and cheaper. Do a search for LS1 adapter plates.
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I remembered seing a set of those on eBay. I went ahead and ordered a set of those as well. I guess I should have asked the seller first, but why are there only 4 screws per side instead of 6 per side like the S&P versions? I know the flat head countersunk bolts are for one of the holes to go to the engine.

What other hardware did you guys use?