I have been re-assembling a '29 station wagon over the past year, and use SNYDER'S as this is who my mechanics use, and recommended. I've placed 15 or so orders with them, probably 150-200 items total. They have been spot-on EVERY time.
I ordered once from BRATTONS. They list a body to chassis bolt kit, specific to the body style. the kit should contain 14 bolts, and a list of sizes and locations. the kit arrived with 13 bolts, only 4 matching the list. I talked with them, and they sent another kit; 14 bolts, the same kit(with the list) but still with all the incorrect hardware. I called again and they're gonna get right on it. This was 2 months ago, and no word, no nothin'.
In the last year and a half, I've called BERTS twice, talked to Steve both times, in search of a couple of parts. He took my phone number, said he'd check stock and call later that day, both times. I have never received any call from Berts.
So, guess who I use. (tho' I may give Mac's a try sometime)