Need new Rims for 66 C10 LWB Fleetside

[JohnC1964]

First time posting a question on this site. I have a 1966 C10 LWB fleetside pick up. I tried to attach a picture of it, hope it works. Body is all original and it has an older 350 engine in it with I believe a turbo 350 tranny.

As I start to work on this truck piece by piece. I wanted to pick up a set of used rims. There is a set on CL, see link below. Can anyone tell me if these will fit. I have 5 lugs currently on my truck, I just didnt know if the center of the rim has different diameters. Thanks for sharing your thoughts, any advice would help. This is a great site and I have learned some much from all your experience. Peace!
http://newhaven.craigslist.org/pts/4907801091.html

thanks, John