How would you build a low 10’s street car

I am sorry I just recently started posting here on FABO and I didn't read this whole thread.
A belated welcome the ! LOL!

Gen III Hemi would absolutely be my choice. If you aren't too deep in small block parts already its where you need to go IMO. My small block 68 Barracuda has been 10.54 on 91 octane gas @3550lbs with driver. Its a 416" W2 headed R1 block with a healthy solid roller and an EFI Tunnel ram. The car does drive really good on the street but its got a really big cam for a street car.
This sounds really cool. Are you using a MP-M1-TR?
And carb sizes if you would.
A similar CID gen III hemi would have a tiny camshaft by comparison and a stock hydraulic valve train that you wouldn't have to sweat. My Dad and I and pretty entrenched in small block parts but I always have my eye on a Gen III Swap lol.
I don’t fully agree with this but it is partially true due to the super excellent breathing heads, you can get away with less duration. Just lift that valve up high and those heads full air. Tiny cam? Hummm, no, smaller cam, yea.

Compare the W2’s flow rates vs the Hemi head.
Also, what size cam are you running in the W2.

And now that I think about it, does anyone know how easy or hard it would be to get a HEMI engines trans behind a LA? (Shifting gear issues aside...)