Depends on what you expect to do with it that you can't at present. Since all the mods done thus far are engine with a few for appearance, some handling mods to the chassis would probably enhance your driving pleasure: bump-steer correction, extra front camber, correct any rear subframe sags that give excess negative caster in the rear, maybe add bolt-on chassis stiffeners. Some owners radically stiffen the whole car by seam-welding all the spot-welded panels. Then you don't need the chassis stiffener kits but you will need a new paint job!
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