The mark 8 fans come with their own shroud, I beleive, and they are supposedly a near perfect fit to our stock rad. I don't have personal experiance with it. Just what I've read. Also I pulled a 2sp elec setup out of a escort(not sure if it's the same) and it fit pretty well. Had to fasten it to the top but the bottm of the shroud slipped into the orig clips if I remember right. Don't know the cfm on high speed.