Get a boost controller to set the boost. While you're getting the clutch replaced, get downpipes installed as well. Try to stay away from the testpipes because they'll trigger the '96 emissions system. There are ways to getting around that issue. But with all the roadside emission tests going on these days, it's probably good to keep the cats (i.e., not use testpipes).
You'll need the 555's beyond the 350RWHP mark which is not far :)