n715tm, the manual tells you all about that. I used Tom's way with my mvvs58i. My engine needed 1.75" stand offs, the board/plate to temporarely fasten the engine to firwall with is about 1/2" thick. I made another set of stand offs, only about 1" thick, and with the board it came close to the 1.75". I can use the shorter stand offs with my DA50R later.
DKjens