318 LA torque?

5.2 Magnum swap wouldn't be 2 grand... get one in good shape for a few hundred bucks, intake manifold is another couple hundred, maybe $100-200 for a decent 4-bbl carb. Everything else will swap over from your LA engine. I haven't messed with a stick-shift one but I'd assume it would be easy to just put the LA clutch, flywheel etc. on there as long as the Magnum crank is drilled for a pilot bushing/bearing. Might be missing some small things but I don't see it being $2000 to swap a stock Magnum converted to carb in an old truck.
Mounts, exhaust, electric fuel pump mod, adapters for this and that, radiator and/or different hoses/thermostat housings. The list goes on and on.