Nope, I liked the sound of the 1st vid more than the second because it sounded like a v-6 pickup and not an old log truck.
V-8 sounds much similar to this,
http://www.youtube.com/user/ebodymopar#p/u/7/grCyzjcT368 or this,
http://www.youtube.com/watch?v=DERmELghbTY&NR=1 , or this
http://www.youtube.com/watch?v=Tk58NZNHGfs , Not this
http://www.youtube.com/watch?v=jrsIzGl_J70 . No excuses for how this guys v-8 sounds. You might want to play vid #2 and 4 at the same time, you can tell the diference. Good Luck on that engine swap, I have 3 engines to reconfigure and swap this summer, a 426ci Small Block for my sons 88 Ram, a 363ci for the yellow truck in the vid and a 440ci Small Block for my '96 Dakota (that has a V-6 in it now with stock exhaust)
I'm not trying to dis your truck, just adding my comments about what I like in sound. That is why they sell 45 different set ups for our trucks, so we can each obtain a sound we like. But a V-6 will always be a V-6 and will sound as such, just like a Honda car with a Coffee Can will still Sound Like a Honda with a Coffee Can.
Oh yeah, in the Second video when it cranked initially it was smoking, might want to run a quick compression check and if that is OK, then have the heads done to replace the dry rotted valve seals and worn valve guides.