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Old 09-18-2016   #4
90 L98 TransAm
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Join Date: Mar 2006
Posts: 458


Re: tri-y header clarification

Doesn't answer your question but here's some info from the Summer 1992Summit Racing/SLP catalog that might help:

1-5/8":
SLP30000 82-92 single cat, 49 state legal $594
SLP30002 89-92 dual cat, 49 state legal $594

1-3/4":
SLP30001 82-92 single cat, 49 state legal $622
SLP30003 89-92 dual cat, 49 state legal $622
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