GM has changed the thermostat design for 2004 so the usual thermo with housing replacement won't bolt up. It is now just a thermostat by itself that will drop into place. I'll post part numbers for the new 160 and 180 thermos when I receive them.
Tom
ORDER LINE - 1-877-4-TBYRNE (1-508-636-0770 in MA)
E-MAIL - tbyrne@tbyrne.com
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Can you retrofit the new style housing and thermostat onto an older style LS-1?
1 ton, 4600 pounds, 14.3@94mph any questions?
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