Edelbrock has 2 intakes for a carbed LS1 a Performer RPM & a Victor Jr.

GM Performance parts also makes a nice single plane intake to carb a LS1.

Do a search on google, it is real easy to make 500hp with the carb kit, valve springs and good cam, then lay the spray on top of that, and your notch will fly!!!
I am going to do the same thing, putting it in a 99 S10 Xtreme.
Edelbrocks kits are real reasonable,
Brian