help wanting all the info i can get

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Cool truck. There's a huge difference in rare and desirable. Even if 3OT were rare, save for personal preferences, 3OT are not very desirable or command the biggest money. There were 6 cylinder Impala and Chevy II SS's made and they are pretty rare, but the desirable ones are the higher HP cars which command much more $$ but aren't as rare as the 6 cylinders.
The 4X4 is way more desirable IMO.