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Premium Member
712 Posts
Hey Clay

I don't believe the ISF exhaust will fit an ISX50 for the following reasons:

1. The V6 is a 60 degree angle engine, the ISF is a 90 degree V8. So the spacing is different.

2. The piping on the F is roughly 2.5" from the manifold, the ISX50 is roughly 2.25" in diameter. therefore, if it did lineup, which it wont, it wont bolt up.

For these two reasons, alone, fitment would be difficult.

If you want a real answer to this question, send a PM to JoeZ and ask him. He builds aftermarket exhausts for both series, and if anyone should know it would be him.

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