Originally Posted by HDDP

Lantana, here's the dimensions you asked for

Exhaust manifold exit at the downpipe connection ID is 46mm
Bolt holes center to center is 80mm

The edge of the bell housing to the center of the mounting bolt of the engine mount (this is the top bolt shown in this photo) is 10 5/8"

And the edge of the bell housing to the leading edge of the lower oil pan is 23"... There are actually 2 oil pans on these engines, but I knew you needed the furthermost forward edge...

I hope this helps, if you need any other measurements let me know...