New lifted prerunner! Two Questions and pics

Hi all new to the forum new to toyotas i recently got a pre runner and its lifted with coils its about a 2-3'' lift. My first question is how much would it be to lift it another inch or two including installation and whats the best way to do that?

second question kinda random but my prerunner is 2WD with Locking diffs and ECT, ive always known one pitfall to trucks without 4x4 is having no weight on the rear end. So i was thinking of making a box that fits perfectly in the bed with a hinged top that i could fill with bricks or something similar

What weight would be good for not to much to dig yourself in but enough to get great grip. Also does someone make something similar to what i just described to get that extra weight on the tail?

THANKS FOR READING!

 

cool sandbags thats a great idea!!

so you only need one wheel to lock to be in sync with the other one?

Do you have a way of keep the bags from sliding forward if your braking?

 

As far as your lift, why not call jacob at suspension specialist and get some maxtrac spindles that way u can adjust your coilovers and adjust as you please!