hehe. I'm glad to help any way I can. I've gotten so much useful info from these boards I wanna be able to give back anytime I can. I say you just go with the 50 since you already have it. Worst case scenario if its too loud you have the shop swap in a 70. I cant say for sure how much of a difference there would be. I've only heard clips online. The 50 though has a real old school muscle car sound. I've already decided that I'm gonna add some sound deadner on the back wall of the cab to make it a little more civil for passengers on long rides. I've definitely noticed a firmer kick from a standing start.
I have to admit though I'm really enjoying the warm weather even more now. I keep making excuses to take "Tiny" out. I love rolling with the windows down, stereo pumping and the new exhaust makin sweet music. I wonder now what intake to get

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KMC ROCKSTARS 18X9 0 OFFSET 5.5" OF BACKSPACING
TIRES NITTO TERRA GRAPPLER 325/60/18
2" LEVELING KIT WITH PINCHWELD MOD.