What k Member do I need

Thanks Guys, I do have the later big bolt disc brake upgrade so It sounds like I should be fine. I know most people seem to advocate for the spool mount style but I like the option of using taller truck style motor mounts to help with clearance issues being I want to keep the power steering(with the pump shimmed for less assist) along with headers. I also really like to see a big fat sway bar out front of the K member.
The wheels I'm going to use are a bit odd. I originally found the rear pair and got them for next to nothing of of ebay. They are 40 finned turbine style that are deep dished. I had to do a lot of searching to find a set of fronts to match but finally another member here sent me three so I got a matching spare. They are definitely 7.5 wide though so I may have to get creative with the front. If there's any interest I'll post some pics. I had to get out the old die grinder and the flap wheel to clean up some dings and gouges But I think they turned out pretty sweet. I will be having them powder coated at some point, I think they will look like new.