overloads or air bags

i have a 08 and trying to decide what to do. should i put airbags in or put overloads on.

it tows my trailer good but i dont like the look of the sag when i have the trailer attached.

 

You already have overload springs and air bags don't go in the bed, they're helpers to the leaf pack. If you want to retain stock height, air bags are a good solution.

 

air bags

i have the firestone rite rides and love them. easy to install and adjust the air pressure and it will still ride like stock, when deflated to 5-10psi the ride is stock and the height is stock, you can add air to lift the rear and stiffen the ride. they are not for hard core offroading though. i used mine on the beaches of OBX and they were great

and this guys has some for sale
http://www.tacomaworld.com/forum/2nd-gen-tacoma-marketplace/173338-firestone-ride-rite.html