if you don't have the tti header already, i'd suggest to scratch that and pick up either a blackdog or fast fabrications long tube header. Neither are in production anymore but can be often found on neons.org. In terms of tb, i'd pick up a 60mm. In terms of exhaust, I always vote for 2.5" piping on a NA, but some may argue to go ahead and run 3" piping. Other little tids bits to pick up would be deyemme motor mounts and a booger bobble strut. 14.1:1 compression is really high in a neon, you don't plan on having this as a daily driver do you?