Eddie, yes, from 1998-2002 the f-bodies all have LS1's and the GTO had LS2's. Of course you're going to get nothing but a biased opinion on the f-bodies, I truely love them to death. I find them to be an outstanding value and are incredibly comfortable, reliable, and smooth. In fact, the one thing about my Z that amazes me everytime I get behind the wheel is how harmonious everything seems to be in it; engine, clutch, suspension, etc...Nary a squeak, rattle, or rub can be heard. Well, that's a lie, I do have a bushing in the rear that's squeaky now but that's kinda of expected at 64, 000 miles. When I drove out to west Texas last November for my mother's funeral services I chose to drive out there rather than fly. I didn't get the MPG that Eagl and GreyEagle got from their LS1's (I got just under 24 MPG) but let me tell you, on I-10 going west where the speed limit is 85 I had the Z at 89 MPH and at just under 20000 RPM. Here's a pic:
The Z just ate up the interstate at that speed. It was jaw dropping how smooth and at ease it was at that speed. Far more civil than my old '77 Trans Am and nothing like my '65 GTO which seemed to get very squirrelly at around 75.
You'll find drivers of the new GTO wil state that those care are far more comfortable than the f-body. This may be true as I've never been behind the wheel of one. But I think of the 2 the f-body is the best value. It won't take much to get an LS1 up to 400 hp, especially if it's an 01-02 LS1 (which is basically a detuned LS6) or if you get a SS Camaro or WS6 Trans Am. Either way I think you'll be happy. But...if you can offord it and can find one, I highly recommend getting one of these, a limited edition Dick Harrell car:
Or one of these if you can find one:
GMMG 427 Phase III Camaro Sorry this has been a little long-winded but I hope I answer your question.