As for power I don't see why every so anti big block but yes a good 360 is all you need.
My car has the 380 hp create which seems to dyno 400 hp plus and all it is basically a stock long block with cam 4bbl and headers pretty basic combo.
This... Budget build.., needs about a 3000 stall, and 3:70-3:90 gears, to make it really boogie....
Trust makes more than enough power to get your duster moving.