how should i do this?
 

im plannin on running true duel straight pipes of my 5.8L '92. what size pipe should i run back? 2.25 or 2.5. its a short bed and i plan to have it exit right before the rear wheels. yea i kno its goin to be loud in the cab

I would recommend 2.5" pipe. It's going to be loud as hell! :beers:

wounder if it would be worth gettin headers?

Depends, do you have money to toy around with? Willing to give up gas mileage? Any other performance mods you want?

aite gotcha how much difference in sound u think there would be?

A helluva a lot. Especially if you get long tubes(only ones worth it).

2.5" will sound better than 2.25". Headers if you have a few extra hundred left over to invest in a good set it could be worth it. You'll gain about 35% more sound with LTs.

would i get enough back pressure to the engine? so it dont skrew it up?

Probably so, but you might want to also invest in a tuner and intake.

why not make the exhaust exits just behind the front wheels? am having a plan for my truck, fit aftermarket headers then just beside the transmission weld 2 small mufflers (1 muffler for each monifold) and let the air goes directy to road ( no chassis burns)...i know my old Nissan patrol 4.8 gained lots from this setup , so i would like to try it here :)

im plannin on an airintake but wats a tuner? a chip?

www.VMPtuning.com Something like that, simply a tuner that tells your truck's computer what it has done to it, to where it can take advantage of the mod.

dang that website is confusing lol

Send them an email. It's like justin@vmptuning.com and just tell him what you'll have and what he would recommend.

how much it normally run?