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Old 09-18-2016   #5
nzwcpn
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Join Date: Aug 2016
Location: tennessee
Posts: 4



GTA Year: 1991
GTA Engine: 350 TPI Automatic
Re: tri-y header clarification

Quote:
Originally Posted by 90 L98 TransAm View Post
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
Yes, the above numbers identifying the SLP headers are found on a sublist under the California EO (exective order) number D-187-10. These are the part numbers for these headers that SLP got approved.
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