No, you can't directly swap a throttle body for a carburetor on a 1988 Dodge truck (or most fuel-injected vehicles). The engine, its intake manifold, and the entire fuel delivery system are designed for electronic fuel injection (EFI) with a throttle body. A carburetor requires a completely different intake manifold, fuel pump, and potentially other components. It's a major, and impractical, conversion.
While technically *possible* with significant modifications, it's not a simple bolt-on swap and would be extraordinarily difficult and expensive. It's far more practical and cost-effective to stick with the existing EFI system and repair or replace faulty components as needed.
