Trying to order some porterbuilt parts but need help

[wwillmon]

Hey guys, I just bought a 73 swb c10 and I'm wanting to bag it. I've been checking out the porterbuilt stuff and will most likely go with them. My first question is if I order the front and rear drop member is that everything I need to drop it other than the bags, compressors, valves and shocks? And are any of the upgrades needed or recommended such as the a-arms,etc.

And can someone explain the difference between the mild, touring and extrem kits? I'm assuming its how low they are but I'm just guessing on that. I'm new at the whole bag scene so please be easy on me haha.
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