49 C3100 Axle Swap

[Mark3100]

Hey - I just got a 49 C3100 and I'm currently replacing the front and rear suspension. I'm putting in a Mustang II IFS with 11" disks and power rack - (start welding it in on Friday). I'm also currently trying to find what rear axle assembly to use. The original axle is 62" hub to hub and the wheels I'm looking at have a 4.5" or a 5.625" backspace so I need a 62" or a 64" axle width to keep the correct fender spacing. Have any of you replaced the rear axle with a newer axle and if so, what was it taken out of? I hear a C10 may work but can't find any info. Any help would be greatly appreciated. If anyone would like me to post anything about the Mustang II IFS install, I would be glad to share - it is a Helix! (Oh, I want a 5-4.75" bolt pattern).

Thanks - Mark!