To me If your building a stroker it's mainly to gain torque why give up a bunch to use a 318 bore. Most builds make around 1.15-1.25 lbs-ft per cid.
So on 0.030 overbores a 318 = 390-400 lbs-ft, 360 = 420-455 lbs-ft, 390 = 450-490 lbs-ft, 408 = 470-510 lbs-ft. 416 = 480-520 lbs-ft.
If it was me I'd rather spend the money on a killer top end and put on a 318/360, than a stroker, if you can afford both no reason not to do that then.
