Don't waste your $150, and just spend the extra money and get the 'retroquik' system now. Gets you true HID projectors as well.
In my experience, you have two options:
1. get the cheapest Chinese 'drop in' kit available (they are all the same, so you should never spend over $50) <-this is a crappy option, but cheap
2. Spend the money and do it right.
If you're not going to do it right, dont spend over $50.