OK, here's the dissenting opinion about to rear it's ugly (and balding) head: If all you want is low 11s (per your above statement), you don't need to build a stroker. A stronger stock-stroke 440 will get you there, plus your current 4.10 gear & 28" tire combination will be well suited to the shorter-stroke combination's RPM range on the track.

IMO, you should...
- port the E heads
- run a fairly aggressive solid flat-tappet cam
- run a good single-plane intake (not sure what you have now)
- build for about 10.5 CR to stay safe on 93-octane pump fuel

A 440 in that HP range would probably be just as happy (maybe happier) w/ 1-7/8" headers. But since I think you said you already have 2", run what you got.

You may need to change converters, but that depends on how your current one works w/ the new engine. The biggest hit on performance will be if the 10" doesn't let you 60-ft. as well as something a little looser.

FWIW, this is both opinion and fact-based from the results I've seen on my own builds.