i think i have the pieces, that paul is talking about, in these pics. i can only guess as to the setup as i have never owned or raced a funny car. the stuff i am familiar with due to hanging out at the chassis shop is also much newer. so, it may or may not be applicable to this build.
here is the rear of the lenco trans. i believe the lip paul is talking about with the "v" is machined into the rear trans cover plate.
here is a shot of the same car. showing the rear axle pinion support and the rear of the trans.
perhaps paul can verify if i'm right on the trans piece.
again, i hope this helps but, remember this stuff is much newer than what the build is.