Stroker- want more ponies

I can't do power adders with the fast efi. I was curious about a roller cam so here is some more info. 3:55 gears, 3000 stall, 27" tires, runs low 12"s .
As far as a wideban tune, I don't know what to say to that, I guess I would need to know what is considered a good tune ?

Low 12's is what I run in street trim with my stock stroke pump gas 360. You have a lot of room, something seems a little off being that you have a good intake and heads that are "said " to be good, I'd make sure the heads have a good valve job, use a thin no thicker than .039 gasket. A cam in the 570 lift area with about 244 to 250 @.050. Don't know much about the efi, but a nice holley 950hp will work great.