are you trying to fit a silvertop sump to a blacktop then?

the 2 part sump incorperates a windage tray and baffles in the upper part so the lower is just a sump pan. are you certain you need to swap these over? as i am going to be using the blacktop sump on my ZT but have a ford WRC inconel manifold so dont have to worry about routing the exhaust under the sump in the fiesta. im also using ARP stud and nuts for the bottom end, this could be an option for you if you defo needed to use the silver top sump but make sure you put thread lock on the 2nd nut that you use to hold the sump and dont over tighten to unsettle the torque settings of the studs.

im sure that there would prob be enough room tho to get the exhaust under the pan.

as fo the oil filter im using a remote filter so have a take off plate on the block where the filter would be to give me more room for the engine and plumbing etc and also ease of changing the filter as the exhasut could poss end up being in the way.

As for mounting the black top i am using the focus mount and having a custom mount welded into the fiesta chassis to accept this.

as an idea here is a coupld of pics of the engine, enjoy