I don't see how a mag lifter will ever leave the bore with the dog bone set up. Or on a 4-5000 redline engine.

You'll be better off using Speed Pro H405P's in a 360 truck motor, instead of KB107's. The KB's will make too much compression for a truck motor. I built a 360 torque motor for my old D350, and used KB107's the first go around.It rattled, and I didn't hear it because of the Flowbastards....and blew it up. Burnt holes in the top of the 3rd piston back on each bank. Replaced them with H405P's and never had another problem....and no difference in power or torque. If you're hell bent on the KB107's, I've got 6 .030 pistons I'll make a real deal on! Good luck.
http://www.summitracing.com/parts/slp-h405cp

Why not use the KB416 pistons for 417$

Notes

Centered pin. Can be used with Magnum rod, small end narrowed to 1". Made with Chrysler 360 block. Used with closed chamber heads, no quench dome.

The kb416 is for strokers, he said no stroker.

I am back to thinking I will do my 360 with the KB107 as my nv3500 probably will not last long behind a stroker 392, my mpg will suffer and I will be afraid to use the extra TQ. Decisions decisions...

The 405p is a stock replacement for the la 360 and will give him less compression than he already has as well as no hope of getting quench.

I think I'll do the 107's, 318 camshaft, adjustable rockers, windage tray, Shave a new set of heads .020, Go with the blue ford injectors, a set of hedders and 3" pipes all the way out the back. Trans will get a rebuild with red or blue clutches, a billet convertor, a shift kit.Going to also rebuild the transfer case while I'm at it.

With zero deck 7cc pistons.039 fel pros typical magnum heads are 65 cc you will be at 10.3 compression and a short duration cam you will probably be running premium. I did almost exactly that but a 318 and it was 9.9 and would just barely ping at low elevation hot days heavy loads. It took a lot of factors but I could get it to ping occasionally. All that to say I would not mill the heads. If you get EQs they tend to be about 1 or 2 CC smaller already so you will be pushing it.

I will have the 392 in my R/T running very soon, it is 10.2 with the stock R/T cam, long tube headers, air gap, CAI, orange 5.4 ferd infectors, lightly ported magnum heads and see how it runs on pump gas It is just in there temporary till I get the 410 ready to drop in.

I run nothing but premium now because of the superchips. I know what it will be like with some more compression and I can't wait. I will run a quiet exhaust so I can hear what's going on under the hood.