Hi from Oz

Hello everyone,
I have 1973 Australian Charger A body size, (that's mine in the pic) currently 318 and 904.
I'm wanting to replace with a 440 and 727 with dodge magnum cam so about 375hp.

Parts I have:
69 440 60 over.
Steel crank, source stealth heads, source forged rods and forged flat pistons.
New stock rockers and shafts.
Holley strip dominator and 850 quick fuel DP.
2800 stall and 3.89 gears.
Not sure the combination will work but Gunna give it a go!
Good to be onboard