Evo 02 housings

[tim]

I would like to know if they have studs too. Also, what is the distance (center to center) of the studs? I have Nash's old DP and it is a 2.5" collector that quickly transitions to 3" so you cant get the nuts on with a 2g o2 housing. If the bolt spacing is wider than stock I might have to pick one up too since I really cant afford a tubular and would really like to get this exhaust put on.