I think the moparts code gets you a 3% discount. I've ordered from there only a few times mainly due to shipping cost. I haven't had a problem other than seems like it takes longer than most places to receive the items. This Christmas they had a 10% sale and their Trick Flow heads were cheapest I found and they allowed the 10% discount off them, so I got them for just a little over $1800 for the pair, great deal if you ask me.