I would suggest just keep it clean. 1g's aren't really made for show. If it was mine, here's what I would do; Lowered about 1.5inches, slap on some nice racing rims, do the interior entirely in cf, put in a nice stereo, get all of the dings fixed & paint it black(best color for 1gs imho), & then focus on the motor. You have the 4g63, which is a very capable motor. Stock internals can widthstand up to 400hp.
Good luck.