Truck mounting is very important and should be done right. Regular bottom mounted trucks are very easy to install so I will not bore you with that information today. But one thing to remember is that longboard trucks have the tip of the kingpin face outward and skateboard trucks have the kingpin face inward.
Here is a very helpful video from Loaded longboards that will tech you about and how to install drop through trucks on a board as well as setting up the wheels and bearings.
Thanks for checking out my blog!
Andrew