[DSK]

I had great results just fitting a decent H7R HID kit into standard OEM headlamps. (cost is approximately £50)

Stronger bulbs won't really make the night/day difference if your lamps are aged. HID's would help a lot more. If your headlamps are shot, just get some better 2nd hand units or new pattern parts.... makes a world of difference.

Avoid projector upgrades on the 70' cars, they are f*cking useless even with HIDs in.