Hillman #9 x 1-1/2-in Zinc-Plated Interior/Exterior Wood Screws (6-Per Box) in the Wood Screws department at Lowes.com
Navien North America - Fishers-Indianapolis-Indiana
Fischer UX - Universal nylon dowel - Best price
1/4"-20 x 1" 18-8 Stainless Square Head Track Bolts (50 pcs.) - Walmart.com
Amazon.com: ICT Billet LS Fuel Rail Spacer Kit Compatible with LS1 Jetronic/minitimer/EV1 Injectors on LS3 Intake Manifold Designed & Manufactured in the USA 551307-105 : Automotive