Oh...I see now...
you'll have to excuse the noob attitude I've got toward's this stuff. I haven't been around cars long by any means (10 years isn't long in my book) - but the time I have spent is in the engine department. Past present and Future...I've never even dabbled in frame/body work...so when you say "subframe connectors", I envision under-the-frame bars that re-enforce the body...
And I think to get to this "sub-frame" area, you needed to completely rip out the interior first....
You can see why I'd be thinking ".....uh....No?"