Prepare your transmission on a stable surface and gather the following:
Transmission spacer kit
2.7t starter and engine
Insert the transmission dowel pins into the transmission.
Mount the transmission spacer to the transmission using the dowel pins to hold it in place
Using your sharpie mark out the area within the starter radius as shown above
Mount your engine on a hoist
Mount the transmission spacer and starter to the engine.
Begin to assess the clearances necessary to house the starter. Note the trapezoidal shape of our cuts and their starting and ending points relative to features on the transmission such as the bolt flanges.
Take note of the above images, the material removed (negative space) is sufficient clearance for the starter.
Mocking up the starter, begin to plan your carves. Imagine your transmission is a blank canvas staring at you with a sort of imbecility.
Using your cutting tool, slowly begin to chip away at the material. Reassess your work after every stroke. There is such a thing as too many happy little accidents.
Keep going until you have sculpted enough negative space to house the starter, then step back and admire your masterpiece.