Just make sure they have the parts "in stock" before you send them your money. I have had problems with stuff being on backorder, or we don't have it and there is no refund on mail orders, but you can order something different. I had that happen years ago and I didn't have money to buy something I didn't need, damn it I needed that part they listed in their catalog. There are a lot of flakey parts suppliers or at least there were when I was building cars years ago.