I was told by my car's previous owner he got his HIDs from here: http://www.mod-express.com I've had no issues for the last 6months.
They have a groupbuy/sale going on over at the Zilvia forums. Enter promo code zilvia and you get $70 off a conversion kit. It was working as of 1/28, dunno when...
Friday nights after we close up our restaurant, my coworkers have a game. I've been going for about a year at least twice a month. It's fun, but I haven't gotten hooked.
EDIT: Is $40-$80 buy in low? We get around $800 on the table on big nights.
http://www.v6z24.com/
Its been awhile since i had a cavalier('88!), but i think there is a wiring diagram on there. It has info n 4 and 6 cyl cavaliers.