Actually, these TNI figures were a lot more difficult to deal with than I expected them to be.
Between the Ron Killings and Monty Brown figure there were actually zero shared couplings. Originally, I was going to use Monty's upper body with Ron's lower body. The first problem was that the torsos were obviously different sizes. I could have dealt with that, but the Ron Killings figure has a huge column going from the hip piece up to his upper torso. After this, it turns out that the shoulder to bicep connectors are incompatible, so switching those out wasn't an option. Then the rotator inside the chest that the bicep swives on is circular for Ron and square (? the hell?) for Monty.
I was going to just give up on it, because I didn't want to have to do a lot of cutting and reworking to get the parts together when I went and got the ML Cage out to compare.
Ron's body is not too far off from the Marvel Legends version of Cage. He's also proportionately the right size compared with Cap. I looked through a few comics to check and while Cage varies in size (from page to page...), he's generally shown a little bigger than Cap and not 'huge'. For comparison's sake, if I had used the Monty upper body, he would have had a much broader chest than FO IronMan. That just didn't sit well with me.