Alfa Romeo 75 3.9 V6 24v - Exhaust manifolds with equal lengths

These exhaust manifolds are designed for 3.0 up to 3.9 V6 24v engine  swaps for Alfa 75 or GTV6. The pipe diameter is 45 mm, the length is 650mm, and the exit pipe 63 mm. The headers continue with 63mm lower pipes connected to a shared Y pipe.

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