Here is mine, 162" from blown up (200%) Ohio RC plans. The fuse formers have been completely redrawn to make the fuse more "scale like" than just flat sides.
The fuse is so narrow it is hard to fit a twin in the cowling. My fuse is only 12" wide. A 150/170 cc engine are in the 13 to 14" range. Even though the cowling is wider than the fuse it would still be a tight fit for the big twins. I will be using a DLE 222 in mine.
A 120" Chipmunk would be a good chioce for a DA or 3W-85 or maybe even a inline 100 or 110.
Here my build thread
http://www.rcuniverse.com/forum/m_10..._1/key_/tm.htm
Kelly