03 and 04 Have a 5.3 Liter engine which is equivilent to a 327.
May have door panel problems.
A prop rod that holds up the hood.
A few other small things.
05 and 06 Have a 6.0 Liter Corvette LS2 engine. About 100 horse more.
Gas struts hold hood up.
A few other improvements. Both are good.
Others may chime in here.
Welcome from Sunny Sturgis South Dakota and good luck.
Some things to look for.
1. Is the vehicle still for sale?
2. How long have you had it?
3. What is the mileage on the vehicle?
4. The exterior color?
5. How many previous owners?
6. Is it a non smokers car?
7. Does it have a good CarFax report?
8. No accidents, floods, body damage?
9. Everything works good and it runs good with no apparent problems?
10. Was it serviced properly?
11. Good tires?
12. Steers good, doesn't pull?
13. Good brakes?
14. Any extended warranty?
15. No rips or tears in interior?
16. No paint scratches or dents or nicks or chips?
17. Top goes up and down good?
18. Air conditioning, lights, wipers, all work good?
19. No apparent problems with the car, engine, transmission, rear-end, etc.?
20. Does it have a clear title?
21. Kelly Blue Book lists cars as, FAIR< GOOD<VERY GOOD< and EXCELLENT. Which category best describes this vehicle?
22. Does the CarFax have a buy back guarantee if it is not as advertized?
23. Is an extended warranty available?
What is you very best price for a quick, no trade-in, no hassle deal?