cant be 18"centers ..you sure
think K&K ghost was a different class??
http://www.youtube.com/watch?v=g-BcmTrU-t8

My Optis are 26" centers and the have about 3" between the motors, yours looks pretty tight but 18"? Anyway that Checkmate looks like it ran great,

thanks for info..
my brakets are set up for 26" also.. tightest ive ever seen some australian ski race boat 22" and looked like motors rubbed..lol

Prop shaft to prop shaft is 18". I only have about 2-3" between the motors and thats with 260 style drop on cowls!