the GT30 should fit. I know there are some guys with t67's and they fit with teh revhard manifold but its close.i have a 05 ep3. I was going to get a peakboost manifold but ran out of funds. So, Im thinknig of going with a rev hard manifold. My qurstion is, will my gt30 fit between head and firewall? It doesnt look like it.