Doing a small port swap on my 91 corolla 4afe. i was wondering if i can keep my gas tank? or what exactly do i need to do the swap. i live in cali btw so wanna stay smog legal if anything. i already have the erg and vacuum lines. i have the intake manifold and exhaust manifold but i have the one with no erg bung hole so I'm selling that to get the right one. Also will a 89 gts dash harness work for this swap? need some help thank you!