1. Is coils spring better than shocks. How much is coil springs?

2. How hard is to find a toyota gas that has a plug in it?

 

What?

 

Have no clue what the heck you are asking in question 2??
Toyota use gas unless it is a diesel. gas engines use plugs, diesels will use glow plugs...

 

Coil over shocks are shocks and springs in one unit. Requires a link suspension. Like this one: http://www.trail-gear.com/trail-link-three

If your talking about springs between the leaf and the truck, search "Zuk mod"

Im with these guys, No idea on 2. Writing complete sentences will help us help you.

 

My papaw is bringing me a toyota gas tank that has a plug in the bottom of it

 

No matter what kind of spring you have, you're still going to need shocks...

 

Like a drain plug/bolt? They all have that. If it was leaking and have been plugged, thats a very different story.