Strokers are good and all, but they'll only give you an increase proportional to the added displacement. For example, a 3.2 is 12.5% larger than a 2.8. So if your 2.8 makes 250 whp, then your 3.2 will make 281 hp. Is the 31 hp worth the several thou it costs? That's up to you.
We've had several people lately build strokers and put down less than 200 whp. IMHO it was because of the cam and head that they had. One guy (zredbaron) got a different head from Sunbelt and added 40 hp. Then he did some carb tuning and got some more. He's on 40mm carbs, I think theres more to be had with 44's or 45's.