R302 or stock 351W block for stroker?

[Fiveohcrazy]

I've had my heart set on a 351W in my Fox for quite some time but may have changed my mind after all??????
I found a new R302 block a new eagle forged 4340 crank with a 3.4 stroke and a set of eagle forged h beam rods,bearings, rings and etc. for around $2000. My plan is to twin turbo my car later down the road.
I've got quite a stock pile of 302 performance/non-performance stuff saved up and would have to start from scratch to start running a 351W.

What to do??? Any opinions??? R302 block or stock roller 351W?

Pros and cons? Any advise? Fryguy ??