a stroked 3.3 MPFI has to make better than 200hp. If the stock is 170~ then exhaust, cams, intake should garner about 25hp CONSERVATIVELY (considering they all build upon each other). Then if you intake port match probably another few hp and its already at 200. Add displacement and the numbers go up even more. Not to mention increased compression if you use pistons without the typical 3.3 dish in them. Gotta add another 20-30hp.
I totally agree with B that the 3.3 can make 190+ (I personally think about 200) with just cams, exhaust, and intake.
As for putting a 350 in there like some people suggested - how boring and unoriginal is that!!! Plus a lot of work to fit it in the engine bay. At least the 3.3 will fit without much modification, and how cool is it to have the 3.4 or 3.6 when hardly anyone else has one.