I would suggest H&R Race springs and Maximum Motorsports caster/camber plates. The race springs don't have as much of a drop as the sport springs and the ride is still pretty decent.
It should be vented to atmosphere. If you had low boost for your combo the bypass could be bad. But you'd have other issues with idle and part throttle. To be honest it could just be the sound of the air going through the filter or even the belt. I can hear my intake at part throttle sometimes...
I think I mentioned in another thread I tried a Champion radiator. Which is basically what SVE and all of them use. I had to bend the A/C line a little and I don't remember if I loosened the ABS pump. But I do remember it dropped right in. The only reason I didn't run it is because my True...
Since you're stock I wouldn't overly worry about the supercharger belt or alternator. Same with the plugs. Just replace them as a maintenance item. I agree with the fluid swap. And check the suspension bushings. Time isn't kind to rubber parts. I think you can get replacement rubber bushings to...
If the stock studs will clear I'd run those. It's not a 5.4, but I have a mix of studs and bolts on mine. In some spots the tube didn't leave room for the stud. Or I needed a smaller diameter bolt head to get wrench in there.
My understanding is the sway bar ends should be parallel to the ground when everything is at rest. And there should be no tension on it when the car is sitting neutral. I could be confusing a sway bar with anti-roll bar with all that too.
But I'd guess as long as the bar is equal with the...
I basically loosened everything up to the mid pipe then put the tail pipes where I wanted and started tightening from the back. Turning the mufflers seemed to help as well. IIRC the pipes attached to the mufflers themselves aren't straight.
For a while Speed of Sound would modify the pillar if you sent one in. Might be worth asking if they still will.
As for essential gauges I always say wideband is one. The rest depends on what you want to watch. I've always watched A/F and inlet temps at a minimum.