Richard,
Having a set of these on my 351, I can tell you that you will be pleased with them. The fuel rails run down the middle of the throttle bodies away from the exhaust heat.
Working with the linkage system is a little tricky, but not overwhelming. I had a little issue with getting the two sides to sinc, but got it right after fiddling a bit. I am currently working on a filter arrangement for it. If you get this one and have any problems, drop me a line.
Bill