I don't know if these could be used, but I do have a set of the MP 4-bolt main caps here.

Was thinking of using them on my stroker W2 build, but it being a factory block there just wasn't enough meat in the webbing to dig into, so I just kept these in the box for when the time is "right" and I finally have a stout block available to build with.

If these might work, PM me and I can send you more info....not sure if this is an emergency type thing or not, either way, if nothing else pans out there is that option!