[Nick_R_23]

The easiest way to get into boost and the simplest installation would be to pick up a used Weiand 144, as it would come with everything to get you going, and allow you to use your current carb. I believe these can run up to 5-7 psi, which would wake the 305 up plenty. Make sure your head gaskets are in good condition!

A turbo will only be as finicky as it is tuned to be. It should also be sized to the engine that it will be powering. People can, and do, throw on whatever turbo they can get their hands on and make good power. The drivability may not always be optimal, but it's a cheap way to make power.

With a turbo, you will need to fabricate or buy an exhaust manifold and crossover tube to mount the turbo to, as well as a downtube. The turbo will need an oil feed line from the engine and a drain tube welded to the oil pan. A boost-specific carb is recommended, as is an intercooler, which adds additional plumbing. You will also likely want a better way to control your timing. A wideband O2 sensor and gauge will be invaluable to help with tuning.