Sounds like you have made your decision, good luck.I really don't want to spend 1200 dollars on a new mid pipe. and this way ill have 1 cat instead of 2. I cant see how that could an issue..
generally, yes, but you must take into consideration pipe width along the entire system. as you could imagine, if the DP was very narrow (hypothetically speaking) really low-resistance end-parts wouldn't make much of a difference.I dont have a math background. My assumption is 2 cats would flow better