Actually 2hp. That's incorrect. I reused all of my factory studs and nuts. I just installed my kooks street headers on sunday. Maybe on the early versions but my set fit perfect with the OEM studs and nuts.
I wasn't worried about the rusting ,my concern is them backing off. Because the kooks bolts have no retainers or lock washers to hold them in place.
In reading your above post, I do have to set the record straight on my Kooks Super Street header install, I did find several OEM header flange studs did indeed have interference issues with the Kooks Super Street 1-7/8" primary tubes. I found stud interference with the primary tubes along the bottom of the flange. So rather than mix and match, I used the bolts as supplied by Kooks.
I think you are correct in your above statement: "Maybe on the early versions", as my first set of Kooks headers were manufactured incorrectly for a Boss 302 side pipe application resulting in a mis-alignment issue. Kooks Headers & Exhaust, Inc., (and their distributor, Maryland Speed Shop), did step-up with a replacement set of headers and even included the Silver Ceramic Coating as originally ordered. Koodos to Kooks & MSS.
However, I still had the same interference issue with my replacement header set.
With that said, I'm very happy that you did not have the same issue, and that other Members who go this route will have the option to use either the OEM studs, or the Kooks supplied hardware.
302 Hi Pro
PS: Happy to report no leaks after 19 months and 7K miles of operation.
You can see one of the mounting bolts here that had stud to pipe interference.
Cylinder heads with studs removed.
Edited by 302 Hi Pro, 29 January 2017 - 07:08 AM.
2012 KB Boss 302 MC: 500A | Boss Production Line Assembly Number 2800. Vehicle Special Ordered with Recaro Sport Seats & 3.73:1 Torsen Option | Engine: FRPP 84.5MM TB, Peterson CJ Vent Can, TracKey Activated, AirAid CF PJ CAI, FRPP 84.5MM TB | Drivetrain: AE 4.0" Aluminum DS, MGW Gen 3 Race Spec Shifter, GT500 Clutch Pedal Box, FRPP Stainless Clutch Line, Dedicated Clutch Fluid Reservoir, FRPP Trans Cooler Scoop. | Exhaust: Silver Ceramic Kooks Super Street Headers, MagnaFlow Street/Comp 3.0" SS CB X-Pipe System, Open Kooks SS Boss Side Pipes. | Suspension: FRPP "T" Springs (alternate Steeda Boss Rear Springs), Koni Sports (Yellow) Adjustable Struts/Shocks, Steeda HD Camber Plates, Cortex Watts Link, Steeda Billet KB Poly/Spherical LCA's, KB LCA Relo Brkts, Steeda Adj. UCA & Energy Suspension Sys. Upper Diff Housing Bush, OEM Boss Rear Sway Bar | FRPP GT500 Forged wheels, (19X9.0 F & 19X10.0" R) | Brakes: FRPP Boss 302 Cooling Duct Kit, Steeda SS/Kevlar Brake Lines, GT500 13.8" Rear Rotors, GT500 Rear Brake Pads, Dot 4 Motul 600 HT Fluid | Body: FRPP Boss 302S Grill, FRPP Boss 302 LS Front Splitter, FRPP GT500 Rear Spoiler & Serviceable Gurney Strip, BFR Front Tow Hook, Jacking Plates, 3M Window Tint, (35/20), OEM Boss 302 Floor Mats & Boss 302 Car Cover, Pioneer TS-D6802R Speaker System, Auto Dim, Home Link & Compass Mirror. Notes: Current Intake System - Ram Air thru Front Grill Fog Light, OEM CAI Box and AEM Aluminum Intake Tube with Drop-In High Flow Filter. In Testing Spring 2016. SCT-X4 Tuner used exclusively for Data-Logging AFR/Timing Curves Only. FRPP TracKey is Preferred PCM Tune.