It's all personal preference and driving style. The V6's can be made fast as can the V8's. There are more options on the GT's and I like the interiors better. I would say go for the GT - you'll love it. There's just something about a big V8 rumbling that's cool.
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66 Tahoe Turquoise Coupe
Laser Red 96GT Ragtop
30 Years & 30 inches apart in the driveway!