k24/dc5r gear box lower cover

[RPMTOY]

Hi just wondering does any one know which cover to use for the lower half of the gear box (block to gear box) Im use a dc5r gear box on a k24a out of euro/tsx but im missing the piece that covers the lower half of the flywheel.

Dc5r i believe is part of the sump and has a little black cover, i have attached pics bellow, any help will be much appreciated.

thanks