[IAMCANADIAN]

I think that GM should drop the 3.4L V6, keep the 3.9L V6 on vans/crossovers and add VVT and/or DI variants to the 3.5, 3.8 and 4.3L V6s. The reason why I think GM should keep the 3.8L V6 and improve upon it is because it's so reliable, has excellent performance and a great reputation. Then on the high feature V6 trims, there would be a 3.1L V6 and 3.6L VVT non DI and DI variants.

So basically:

Cars: 3.5, 3.8 OHV
3.1, 3.6 DOHC

Trucks/SUV/Van: 3.5, 3.9, 4.3 OHV
3.6 DOHC