I could see an argument on c-5/6's but a c4 vette? I'd love to see a c4 vette run against a stg2 wrx/sti on any course. Road course, drag strip, auto-x I dont think it would matter.
And resale value? You can pick up most c4's in the 8-10k range....sure they have been out awhile but that isnt great resale value in my book considering what they sold for new.