GEN 1 JDM Roush Upgrade kit (675/700hp)

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MTF

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There's a 7/16 difference in length between the two.
That last four numbers is the length in inches. 124.7 and 125.1
I can run either one on the Whipple. Stock harmonic balancer pulley.
 

Dane

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Ahhhh... then I just filled this thread with belts that dont work for you...lol
Well, I'm currently USING K061247...
What I don't know is if I'd need to change it for the larger lower.

I suspect I'd at least want to change to the K061251. Mine's already a tight fit, but it would be nice to confirm the belt for a 69mm upper with 10% bigger lower.

Also - THREAD HIJACK!! YEAH!
 

B E N

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Are you serving at Fort Carson? They have a decent auto shop you can work at if so.

Heat exchanger would be high on my list, heat soak sucks. Headers would be second.
 
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