1973 360 upgrades

I’m hoping I will see some noticeable gains going to a 4 barrel….. and a good intake. I may do a cam swap soon also but I need to make sure I can do that.
I may also have the gears changed but I wanna see what’s in it first it does have a suregrip. I’m sure a 3.90 or 4.10 gear may help it???