What types of mods can be done to the M103 Engine to make it perform better mainly off the line. I know upgrading to the V8 models would be a more logical choice. But in terms of the M103 is there room for improvements at a resonable price, chips,exhaust...ect. I am hoping I could somehow bump power to the 200hp barrier. (So no more tauruses beat us at the stoplights)

1986 300E
Euro Headlights
Clear Blinkers
95 Red/Grey Taillights
Eibach Suspension
16in E420/430 Wheels
Monotone Bumpers
S-class Shift knob and
Steering Wheel