Cheap my man. $100 or so for headers, $40-70 each for rear resonators depending on what you go with. The Magnaflows are a slam dunk and can be had for 145 shipped for the pair. They're 2.25, 14 inch long and 4 wide IIRC. (i wanted to try the areo resonators this time as they were cheap, good build (stainless build and ceramic packing and had good reviews from the E46 M3 guys). Find yourself a sweet set of exhaust tips to crown your creation. Splurge if you want as you just saved a butt load. I went with a larger 3.5 double wall slant quad tip this time. You can make 4.0 quads fit, depending on what you want. I thought about it, but the 3.5 quads seemed perfect. I think they were 80 for the pair. I reused my OE exhaust manifold gasket and applied just a thin film of UHT gasket maker. No issues. Depending on budget you may buy news ones for peace of mind. I bought some extra studs and copper nuts from BMW Murray, if I have some left over their yours. Just add in what it costs for your shop to weld everything up. My shop is good to me and I've budgeted 150 for all of it, but 200 should cover most shops?

So.... For around $500 for everything, your done.... Until you add in some high flow cats. 50-100 for each. I'll post some pics when I get on my laptop of the components. My current build is $410 with install cost not including cats. That comes later. You'll love it squid. My audio does it no justice.

If you want help putting the headers on let me know. Happy to help on a Saturday.

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2005 X5 3.0, 6MT, Alpine White on Truffle Brown, Sport, Preim, and Cold Weather, Alpina Stainless Headers, AFe Intake, UUC SSK, OEM 87's, 3.64 Differential Swap,Performance Modified Euro 2 Tune, UUC LTW Flywheel and HD clutch, Bilstein B12 Suspension kit
Future mods ZHP/Schrick Cam Shaft upgrade, Operation code name:Doppelschrauben-Kompressor

Wife's Ride: 2011 e70 X5 351 M///Sport.

Also in the fold: 2004 X3 3.0, 6MT, Black Sapphire on Terracotta, port, Premium, Cold Weather.