A perfect example - and you know you could talk this down:
Cars For Sale: Car Details - AutoTrader.com
Cars For Sale: Car Details - AutoTrader.com
You can find 4th Gen Ls1s for 10k and under. I got my 2000 Z/28 with 51k miles for $9500 over a year ago. This was before the 4th gens value took a dive...
I just took a trip from the Bay Area to Monterey/Pebble Beach and got 25 mpg with an auto with full bolt ons.....
I have less than $2000 in performance mods, $2750 if you include the wheels and suspension and run high 12's....
Manual f-bodies get even better gas mileage....even with a cam or over 400 hp they can get good mpg.
I wouldn't bother with a 3rd gen Camaro or LT1 personally...
240s, 3rd Gen RX7 and 300ZX are hit or miss. Usually if they're in good shape they command a hefty price for what you get.
Plus a lot of 300ZXs have had electrical issues.
96-98 Cobras are cool. I want one some day. I'd still pick my F-body over one as of right now. Unless I found one with a Terminator swap.
The only other option that I see that I would agree with is a Fox-Body. Finding one that isn't a beater and isn't over priced may take a while.....
Good luck
LT1s are a lot of fun to drive. My brother's 94 Z28 A4 is a blast and the interior is way more comfortable than my 02 Z28 (although a little dated comparatively obviously). Granted it's a high 13-second car with the few bolt-ons it has, but I'd cruise around all day in that thing because I like the feel of it (cloth seats, too). He also paid only $6,500 for it with good mileage and in great condition, and that was about 6 months ago.