vx_ss_black
phantom vx
the ls1s out of the factory arent as thirsty as youd think. i was getting about 600ks out of 65 litres in my vx ss if i took it real easy, and now after my tune i get about 600ks on normal driving. i cant say how the v6s are coz i never owned one, but with a tune the ls1s are pretty dam fuel efficient. plus, you have the power to break loose when you want it with an ls1. best of both worlds in my opinion.