Tips on selecting Pistons??

Rani, what's the target/goal? E.T. Wise, do you have a goal?
Or are we just doing a simple mean machine build?

Answer me these;

Octane available
Car weight
Rear gear & tire size
Transmission to be used (I seen it said 4 speed, auto or manual)
Aluminum of iron headed
Ported heads or not
Valve sizes intended
Is there a limitation to observe?

Considering I am at sea level.....

General and typical rumblefish street build.

360 w/flat top Pistons at zero deck.
I have used the KB-107's a few times and now I'm building a 360 for the wife's Cuda using the above link RRR posted. If you can afford new rods, a little overkill here doesn't hurt. New scat rods are reasonable in price.
Head gaskets vary for edging the ratio up or down.
Have the block deck mills to achieve a zero deck height and for use with MLS gaskets.
750/800 carb/Dual plane
An Edelbrock RPM or a Weiand Action Plus are the best bets IMO. A 750 covers most bases. The 800 is also pretty good on top.
Well prep'd cylinder head,1-3/4 header - 2-1/2 exhaust
If the cam stays small, (read below) the head just needs good basic work. If your stepping up in a cam size, more port work bcomes a thing to really work towards obtaining.
Aluminum or iron headed, flow is flow and here is where the power makes or brakes an aggressive street combo. The rest of the exhaust should be free flowing and at least 2-1/2 inches. 3 inches gets a little loud but opens up some good power if your getting over a 475+ hp level.

The cam, converter and rear gear/tire size now need to be worked out for your car & the rpm range you want to be in. You could go as mello as a cam @ 230@050, a mild 2500 converter and 3.55's.
You could also step up in cam to a 244@050, 3500 converter and use 4.10 - 4.56. Your tire was increases a good bit.

And yet again, moving up to a larger cam and converter is possible. Though just a tad light on compression, you may also like to get some well ported heads at this point. But the point is, the base short block package is there and good enough to use in a pretty flexible mannor with a verity of changes. Simple, effective for the street, easy on the pocket.