Haven't tried Peformance Years yet, but I've had good dealings with Ames on the 2-3 orders I've placed so far. Putting together another list of stuff to order in the next week or two for my April projects
As mentioned by someone else, I like their quality rating of the parts in the catalog, and their tech and sales support is very good too.
'68 GTO, 400/TH400, AC/PS/PB/PW, hideaways, Hurst dual gate
'72 442 'Vert, 350/TH350, AC/PS/PB/PW
'74 Corvette, 383/4-speed, 450 hp, restomod
'71 Javelin, 304/3-speed
'70 Cougar XR7 'Vert, 351W/FMX auto *SOLD*