exhaust: don't go with any cheap, immitation brand. get DC or greddy. they are the closest thing to stock with larger flow.coil overs: no doubt, ground control is the best. i have tried skunkworks, skunk2, matrix, obx, teins, neuspeed, and nothing is as good a ground control.engine swap: h22a4 because ek's are really heavy, but if you are going b series, definetly a b18c1(usdm gsr). make sure you get a obd2 96+ so you can smog it through the state referee if you're in a county or city that requires smog. and if you're not, then go b18c (jdm gsr) because it has less sensors and a 10-20hp gain on the usdm engines.