Because the car is absolutely a modern take on the original FGT and to a slightly lesser extent, the Gen II FGT.
Both came with V8's.
I feel certain 95%+ of their prospective buyers will want a V8. With the Aluminator crate engine (from FoMoCo) coming in at just under 600hp naturally aspirated, I would think that would be the obvious and most desirable power plant.
Has nothing to do with the abilities of the TT V6.
well it is a superformance so there is no reason why you couldnt shoe horn a V8 if you really wanted one, unless they make the engine bay so tight. It would be interesting to see if they keep that in mind for people that may not want a 6
I prefer the V8 also but only bc you can twin turbo or sc it and make 1000 plus.. Im looking forward to see someone making 1000 hp w ecoboost.