Under $4k budget build LA360 build
I did a 360 magnum fairly cheap, not cheap parts tho.
I got very lucky and bought the long block remaned for350. 150 for a hi po cam 150 for a knock off air gap. Free 650 dp from a friend, a dizzy already set up for 80, oil pump 70, seals, gaskets 100, tranny with 3500 converter 250. Etc, etc
If you’re willing to wait and you’re a bargain hunter(again no china parts)
You can definitely find great deals here especially as there are members who are willing to help others out.