The sn95 cluster can go in a fox dash with modifications. ( what those are I do not know ). Would be a bunch easier if you had the wiring harness from the cobra. Even easier if they included the ignition switch ring and original cobra key. Those cobras have PATS so it won't start without key or tuning around PATS.
The rear IRS takes more than drilling one hole. Smh. You have to drill 6 and widen 4 of them to mount correctly...oh and brake system stuff, pinion flange, and driveshaft stuff ( mine had to be shortened about 3/4 inch ).....and wheels.