the Ls7 tank I used is the same as on the X car. It came from ATS but it & the breather are by Peterson fluid systems they make dry sump stuff for sprint cars & other oval track uses. The current flavor of the month car is
same setup as mine. All available but you have to relocate battery, & the goes down through the inner fender where the battery used to be. Pics of this are on the home page LS7 install in a 69' Camaro.
I know of LS7's converted to wet sump also but not with a notched style pan.