short shifter.... humm... many brands to choose from... depends on your budgets.. like neuspeed, dc, b&m, apc, tenzo, etc... almost any one of them will do... just remember to get energy suspensions' bushing for them... just to make the shift more accurate and less rattle. or u can get a used GSR shifter. that's what i am trying to find.

as for other mods... well... lots... it all depends what you want... go for show or for go???