Rear width/mini tub?

Yep, Did a search and there is some good info on here and it wont be bad as i do have a plasma cutter and all the goodies here in the shop and if there is one thing i like it is fabrication. Thanks guys. I pulled the 170 3 speed out today and will start taking it all apart and do a total on it. It needs floor pans which i do have. Thanks for your input. I'll be asking for more down the road.