Scorpio 94er 115 hp motor/optical tuning

Hello I drive a 94 Scoprio MK1 and I wish myself a bit more performance when driving.. Would anyone have a good idea for this???? and someone has a clue what max. size of rims I get on my Scoprio… I want low rims 16 inches but I have no idea with the ET= press-in depth there only 38 allowed and find in every shop for all Scorpios rims but not for my (GGE) Thanks already