I have air and a system on my truck and i was thinking about relocating the battery to the bed so i was planning on have the negative grounded in the front to the engine block and to the frame, then have 0 gauge wire coming off the positive side of the battery (with a 160 amp fuse attached to it) and run that straight to the alternator. and also im gonna have a 4 gauge wire coming off the positive side of the battery going to a distribution block and coming out of the distribution block will be a 4gauge wire that goes to the fuse box and another 4 gauge wire that goes to my system and one more 4 gauge going to my starter. anything i need to add/take away beforehand? does that sound about right?

oh yeah and its for a 96 tacoma

Sounds good to me...looks like you got everything covered! I added an extra ground on my truck in the rear just for the hell of it too & since your running all that stuff then I would add a ground under the bed as well just to be safe!

sweet thanks man this write up helped alot, i will now be able to put wheel wells in the front. GOOD JOB!

Np...glad to help. Oh & when you doing the front fender wells in be sure to take pics & post them on here!

good write up... i was wondering on what i should do when i throw my batter in the bed. lol
does autozone carry the battery boxes?

Autozone & Advance Auto Parts carry them...pretty much any parts store should have the battery boxes.