budget street motor 360 or 383 for 71 duster

Ok have you guys ever had a 383? Or had a mild or built 383? More torque and less money to get to 400-500 hp. I thought he was on a budget of 4-5k. You dont not need a stroker kit or aluminum heads to get 400-475 hp out of a 383. 400-475 hp out of a 360 will take way more money. A little heavier in the front but not much. His suspension will be fine as is. Now dump the LA 360 for a 360 magnum I may go that route.