Spare tire well delete

I have a flat floor in the FB. I did it to make room for the 3" exhaust after the mini tub. I used a 68-70 charger Tanks Inc tank and chopped the back 3-4 inches off back.The fill tube isnt exactly the same as its at a bit of an angle compared to the stock A body tank, but it lined up and is tight. I have not run the car yet so I cannot vouch that it is going to work for sure, but it appears that it will. I can send pics later if interested. I am using a Summit exhaust kit. Will probably run back to the axles today and have an exhaust shop tweak the last bit out the back to make it out straight. Right now the pipes head out back at slight angle. The kit comes with and extra bit to cut off so it should have enough to make a few bends to straighten it out. Im planning on carrying a plug kit and a 4x4 type compressor to fix flats....all else fails....AAA.