I'm not quite sure why everyone is trying to run these large housings. My TA66 (stock 87 housings) will go deep into the 10s and it will fit with very little modification to the intake. Just shaving the fins is enough for clearance when running intercooled and no modifications to the intake have to be done running it hotair. It's been said over and over and over and over again that you can have anything you want in the 87 housings from a little 49 to a 66.
With the 4.1, you can go a couple sizes bigger and still have good spool over a 3.8L. Not sure you would really need anything bigger than a 62 on a car that runs street tires. My dad's had no traction below 60mph on the street with drag radials. As it is with mine at low boost and ordinary tires, I can roll into it at 40mph and smoke them.