do i need a new pick up for a 2" tranny pan

got my tranny built, but now I want to put a 2" deep tranny pan on it . do I need a different pickup and a deeper dipstick like in the motor all the info I find says I am good and I cant find a 2"pan and pick-up kit . and am I better to go with the new flex plates or is the old 1 still fine ,im at about 420 hp with a 2800-3200 stall thanks for any help