b'GTU VINTAGE-WARRIORGTU Vintage-Warrior Light Weight Roll Cage & Chassis Structure: oSVRA, HSR, NASA, SCCA & Trans Am Legal Chassis Structureo5-Zone Roll Cage Design with Strong Cockpit & Four Crush Zones oUpper 40% Roll Cage is 1.75 X .095 Round Tube 4130 Chromoly (Blue & Red Tubes) oAdditional Roll Cage & Chassis Bracing 1.75 X .065 Round Tube 4130 Chromoly (Teal) oLower 60% of Chassis is Primary 2x2x.083 United States Mild Steel with Minor Round Tube Chromoly Bracing / Floor Triangulation Structure (Yellow) is 1x2x.065 US MS oThis is 35% STRONGER than the More Common 1.75x1.75x.095 Square Tube, While Only Being 1.2% Heavier, Requiring Less Braces GYU Vintage-Warrior 4130 Cage & US MS ChassisSide ViewGTU Vintage-Warrior 4130 Cage & US MS ChassisTop View Curved XDoor Bars StandardModern Strength & Safety, While Being Period Correct for Vintage Racing:oMost Trans Am & IMSA Chassis were Built with Square Tubing Back in the Day. Some Still Are in the Modern Age. This is a Period Correct Space Frame (Tube Chassis) Structure of Modern Design, Based on Our Race-Warriors, But with Lower Square TubingoKnowing Where the Forces Originate & Direct, Every Tube Has a Purpose Strategically oNo Extra Tubes / Every Tube is Critical, Based on Loads We Know this Platform Creates oFront & Rear Clips Built & Welded on Our .003 Precision Fixture Table oYou Level & Square the Clips to Each Other & Build the Cage with Our Prebent Kit 120'