Ok so i have a 5.0 TBI but want to know if i could at all possibly make it into a TPI LB9...... Is this at all possible????? could i simply switch out my intake manifold and install a TPI system or do i have to do a complete engine swap???? LOL i bet this is knida silly but never really worked on camaros and still in apprenticeship..... Will appreciate your responces...

It can be done. You'll need all of the TPI hardware that goes on the engine, the ECM, harness, and sensors, and replace the electric fuel pump in the tank with a TPI pump.

The heads, cam, and exhaust were better on LB9's than on LO3's. Of those, I'd say exhaust is the most important.