That's the way to go.
If you think It's to loud, simply use longer mufflers or move them further to the rear.
The test here is what it sounds like in the cab at full throttle going on the freeway and not what someone thinks standing at the rear, reving up in the parking lot etc.
Headers make noise (It's what they do) and you will have to drive acordingly 'in town'.
By welding 2 1/4" inlet pipes to the mufflers and sliding them over the 2" head pipes/clamping makes this 'adjustment(s)' easy and cheap. On a P/U you can place them (mufflers) further to the rear than on a passenger car. Then make your tail pipes.
If this all sounds like "Too much effort" then don't get headers. Run a stock (292 truck) manifold/head pipe into a 'straight through' single muffler, then into a larger tail pipe.
You can't have it both ways.
Good luck.
