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Old 10-12-2008, 03:35 PM   #128 (permalink)
EcoModding Lurker
Join Date: Oct 2008
Location: OH
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88 comanche - '88 jeep comanche sport
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you might want to be careful with the cooling system especially if your 4.0 is newer than a 2001 i have heard that the newer heads are prone to warping. i am not being a nay sayer just keep close tabs on the temp guage.
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