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Thank you and I am looking into that now.

I have just bought a new travel trailer that weighs 4800lbs. I have a 2007 Tahoe with 100,000 that is like brand new. I don't want to trade it but I have found that the 5.3 engine has a tough time on hills and it only gets about ten miles mpg. My question is can a 6.0 engine be put in it...