what am I doing wrong???????

I picked up from a great member a 73 Duster with the following 360 stroker, STR 12, Alloy heads, Headman headers & a Milidon pan all that go's through a TCI 727 & B & M pan.
I decided too fix a few engineering problems like the engine mounts, steering column & change the box to a stronger 727 & 4000 stall.
I have never pulled a US LA out before so I checked with this tread if I could pull the engine & box together & got these results.
For the love of me I cannot get the pan past the K frame or the headers out, at the same time I think that this K frame might be a S6 one, can someone help me out?

next time try this........ way easier
http://www.forabodiesonly.com/mopar/showthread.php?t=88358