Well worth doing but the problem is getting the longer stroke crank in with decent length rods as obviously the longer the stroke then the shorter the rod needs to be. But there are ways around having to run really short rods the easiest being changing the pistons for ones with the pin sited further towards the top of the piston or make the block taller.

The end result is that you can run a big turbo and still have the low down drivability of a small one.

I reckon 2.2 is about the max with a std height block if you still want it to feel nice when using high revs.

I don't know why more customers don't go down this route.