So my 18 year old friend is looking to sell his 2013 Chevrolet Silverado LT with a 5.3 liter v8 (tuned to 450 horsepower). He expects to get roughly 26k from selling it and wants something cool and performance oriented as a replacement. Right now he wants a 2014 mustang v6 (which I think is the world's worst idea) . His plan is to mod the crap out of it so it has performance similar to more expensive cars.I only mention that because insurance cost on any car you recommend should not be too far above that for him to actually consider it. He wants a manual, but it is not a deal breaker for him. Here are some cars i have suggested

06 e63 amg

08 pontiac g8

2008 c63

2008Lexus IS f

Any ideas?