Yet another intake Question.
Lots of good info in this thread.
http://www.forabodiesonly.com/mopar/showthread.php?p=211281#post211281
I dont think low 13s and streetable should be a problem. I would use the RPM but I bet you could do it with an iron Thermoquad intake if you wanted.
I would use a cam with around 225 @ .050" on the intake and 230ish on the exhaust size (XE268, 268 Voodoo or maybe something from Hughes or straightline) Get the compression up to 10:1, Your Ported Js should work fine.
Use a 750 carb of your choice and some headers and the motor should be good.
Stick some 391s or 410s out back with a sticky set of tires (26" for the strack, 28s for the street) and a good converter built for the combo.