On my 4.6 I have the stock T45 and longtubes. With the car on a lift we have been able to get the tranny in/out several times WITHOUT removing the engine/k-member.......but it is a BIT(H!!!!! Even the starter takes an hour just to find the top 2 bolts! I'm making a change and considering shorties if I can still make the numbers.

If I recall.....doesn't the 3650 have the bellhousing attached just like the T45. (actually it does because several buddies run them)