Square Flange

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  Holley EFI Black Cast Aluminum 4500 EFI Throttle Body Intake Elbow-Ls Black EFI Throttle Body Intake Elbow 4500 – Fits GM LS Throttle Bodies Part # 300-248BK

  $314.95 Original price was: $314.95.$279.95Current price is: $279.95.
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  NOS “CHEATER” FITS HOLLEY 4-BBL / CARTER AFB NOS “Cheater” series Nitrous System, fits Holley 4150 and Carter AFB (late), 150-250 HP, includes Blue 10 lb Bottle Part # 02001NOS

  $1,059.95 Original price was: $1,059.95.$941.95Current price is: $941.95.
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  NOS “POWERSHOT” HOLLEY 4BBL NOS “Powershot” series Nitrous System, fits Holley 4150 and Carter AFB (late), 125 HP, includes Blue 10 lb Bottle Part # 05001NOS

  $752.95 Original price was: $752.95.$668.95Current price is: $668.95.
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  NOS “SUPER POWERSHOT” HOLLEY 4-BBL Super Powershot Nitrous System V8 w/Holley/Carter 4 bbl w/10 lb Bottle Part # 05101NOS

  $1,073.95 Original price was: $1,073.95.$953.95Current price is: $953.95.
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  NOS BIG SHOT INJECTOR PLATE Big Shot Injector Plate w/Jets & Plumbing, Holley Square Bore, V8 Part # 12510NOS

  $318.95 Original price was: $318.95.$282.95Current price is: $282.95.
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  NOS BIG SHOT NITROUS SYSTEM (HOLLEY 4150 FLANGE) Big Shot Nitrous System Holley 4 bbl (Holley 4150 Flange) 190-300 HP with 10 lb bottle Part # 02101NOS

  $1,222.95 Original price was: $1,222.95.$1,086.95Current price is: $1,086.95.
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  NOS BIG SHOT SINGLE STAGE UPGRADE KITS Big Shot Single Stage Upgrade Kit Converts Single 4150 Holley Cheater Kit PN 02001NOS to create an NOS Big Shot plate kit Part # 0025NOS

  $417.95 Original price was: $417.95.$370.95Current price is: $370.95.
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  NOS CROSSHAIR PLATE 4-BARREL 4150 PROFESSIONAL KIT – PLATE ONLY Crosshair™ Plate 4-Barrel Professional Kit – Plate only Part # 12566NOS

  $562.95 Original price was: $562.95.$499.95Current price is: $499.95.
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  NOS POWERSHOT WET NITROUS SYSTEM FOR 4150 4-BARREL CARBURETOR – BLACK Fits Holley 4150 and Carter AFB (late), Fixed 125 HP, includes Black 10 lb Bottle Part # 05001BNOS

  $767.95 Original price was: $767.95.$681.95Current price is: $681.95.
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  NOS SNIPER WET NITROUS PLATE KIT – 4150 SQUARE BORE Adjustable From 100-150 horsepower 4150 Plate Kit. Includes 10 lb Sniper Orange Bottle, 4150 plate, and installation items Part # 07001NOS

  $730.95 Original price was: $730.95.$648.95Current price is: $648.95.
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  NOS SNIPER WET NITROUS PLATE KIT – 4150 SQUARE BORE Adjustable From 150-250 horsepower 4150 Plate Kit. Includes 10 lb Sniper Orange Bottle, 4150 plate, and installation items Part # 07002NOS

  $890.95 Original price was: $890.95.$791.95Current price is: $791.95.