hello there,i have ford escort 2.1 zvh,it has a focus bottom end a efi fiesta turbo top end and an escort t3 turbo,its running green injectors bored out forge pistons,and an uprated cam,only problem is the gearbox is leaking oil bigtime i believe its a 1.8 lsd diesel box,is there a better box to replace it with?????any advice or help will be gladly welcomed thanks in advance