I have a brand new, never used, still in the box TA Performance 400/430/455 oil pan. P/N: TA 1511D Description from their catalog: TA 1511D 400-430-455 Black Powdercoat ............................. $179.00 TA 1511C/D: Uses stock or TA 1520A pick up tubes. Please note this pan will not work with cars that have an original single exhaust cross over. Dual exhaust or a custom cross over will be required. As I mentioned the oil pan is still in the original box from TA. Will not be using it, can send pics if anyone would like. Asking $150 shipped in the lower 48. Located in Pelham, NH Contact me or respond here with interest.
Any idea what that “rectangular” area is all about? The pic on TA’s website looks smooth and rounded like the original.. is yours a very early design? How long ago was it purchased?
I bought it about 3 months ago. No telling how old the picture on the site is or if it’s correct. Feel free to call them and ask.
The squared off center section of the front sump is the later design... the smooth round one is older. Like Hugger said, additional rotating assembly clearance.