I don't see an application for a Y-block in their catalog. They have one described as 1954-67 All 8 cylinder engines (excluding 292 engines), part 708105.
There is an application for 1962 Ford trucks, F-100, F-250 with 8 cylinder engines, part 708104.
Now a 62 F100 and F250 V8 will be a Y-block but this same part number is listed for 360, 390, 351, 428, 429, 302, 351C, and 400 engines of various other years. So I'm almost willing to bet that those won't fit right.
I think the best way to go is to get a set of the universal wires. Then you can get the lengths just right. Part 708190 will have 90 degree boots on each end which will work great for a Y.
Lawrenceville, GA