Stealth™ Intake Manifold 429, 460 V8 (standard heads)_x000D_ Will not fit 1988-later cylinder heads. Will not fit 1988-later cylinder heads Stealth™ Intake Manifold 429, 460 V8 (standard heads). Will not fit Boss 429 heads. Does not fit 1988-later cylinder head design. Port-matching manifold to heads is necessary for best performance results.