I'm looking at the 5x8 oval and was wondering if the shorter muffler would be louder and if so how much louder?

Its the SI/DO the rear with 18" tips. Pretty much the 16614 setup but going to see if my local shop can save me some money.

 

Yes it's louder. I don't know how much.

 

Its not that much louder. I have the 14" and I love it, it's not too loud at all and inside the cab its very quiet.

 

Well what would be the advantage of getting the 14"? Just slightly louder and maybe cheaper.

 

Just slightly louder and thats about it.