LS1 Conversion!!!

Hello everyone, im new here and need some help! Im told this is the best place for LS1 conversion help! I have a 1994 Silverado 1500 with a 4.3 V6 and im wanting to put in an LS1 out of a 2002 Corvette! I got EVERYTHING with the engine! From the Tranny to the belts, hoses, A/C, computer, EVERYTHING! What else do i need??? Were can i find headers that will fit??? Does the rear end need beefing up? What tips can you guys give to a newbie! Please help!!
Thank you!

have you read the conversion stickies?

Also there is a 5.3 install into a 97 Tahoe on S&P site. Most of the info on that applies to your swap.