318 combo's

since you're messing around with that software, try to get a flat, broad torque curve starting at a low rpm and peaking out about 5200 rpm. you'll be a lot happier with that in a street car.

I would also use magnum type heads purely for the better chambers and resulting detonation resistance.

I built my 360 to be a torque monster.
360 +0.040
Summit K6901 cam
8:1 pistons
Magnum Heads (static CR about 8.8:1)
Air Gap intake
600 Holley
headers

Desktop dyno 2000 gives me:
RPM HP TQ
2000 140 367
2500 177 373
3000 218 381
3500 263 394
4000 306 401
4500 343 401
5000 367 385
5500 376 359
6000 371 324

I know its a 360 but it shows you how nice a setup like that will work, even in a 318. I don't plan to go much over 5500 so I have lots of usable power, especially for a street car with 3.23's