budget street motor 360 or 383 for 71 duster

I did watch the video so is it basically a stock bottom end and pistons with a milled head to raise compression ratio and just a cam and intake carb for 440hp?
Lol, first, Steve Dulcich knows His way around BB Mopar heads. They are nowhere near stock, and anybody that tells You it's no big deal hasn't a clue, and anybody who
does is going to charge appropriately for said work. The results in that little showdown are not indicative of the avg. guy tossing together some parts & whackin' the heads
a little. That said, the 383 can deliver awesome punch per cube, again I love 383's. But You're power goals are easily achieved with a smalblock platform, keep in mind a
smalblock head of the desired variety flows nearly the same as the comparable bigblock heads OE, a fact. You already have the car set-up for a smallblock, so there are a
number of little things that are going to take up Your time not performance related, just to change engine types.
As far as the aluminizing thing goes, again, if You're going to drop coin for heads & intake You will actually increase how much lighter the SB is than the BB.