Mopar Billy... Lol

If I was to build a 10.30's 2900 pound small block I would start with cnc eddies by Modern. Perhaps even the airwolfs after they have had some real world testing.
904
Victor
950
1.875 headersP
Flat tappet 260-266 ish 600+ gross lift
At 10.5-11 compression this should run your number pretty easily

I say this based on a combination I ran a few years
3400 pound A body( all steel, bench seat , mild steel cage,300 pound driver ( me lol)
727
Stage 2 not fully ported eddies
Small tube Tti headers
Weiand excellerator
1025 race demon 4150 carb
11.8 compression
260-266 598/623 lift flat tappet on a 107 in at 104
This went 10.70's and 80's driving it everywhere
I suspect knocking 500 pounds out of it, fully porting the heads, and swapping out the 727 for a 904(plus running the better bigger tube headers it would have run close to10 flat
Knocking a point of compression out of it might slow it down a tenth or perhaps a hair more
This all is with a 4 inch crank . I doubt your 3.79 crank would yield much difference to the equation

ETA

I later pulled the Eddie top end off that shortblock( used same flat tappet cam) and added W5 heads and headers and a modified victor W2 intake Brett did up, and with zero other changes the car ran 10.38 at 129. This still at 3400 pounds with the 727 tranny
Grenaded that when the cast stroker crank let go one night at the track
So in my mind, there Is a reliable and street able way to run probably better than10.30's with a good casting head.