Premium Material: This throttle Body Bracket for 4150 4160 Series is made of Aluminum Alloy Billet, Perfectly fits Precision CNC machined.. Compatible with CHEVY, FORD & MOPAR that uses Holley 4150 or 4160 Series carburetors. Fits 265 283 305 307 327 350 383 400 396 402 427 454 472 502 260 289 302 351W 347 352 360 390 406 427 428 429 Quality Performance: Dual stainless steel return spring, stress tested high quality return spring. Multiple Colors: 4colors available for selection, select what matches your vehicle best! Customer Service: 12 Months Worry-free Money back if you do not like it!