Posted for "Nelson, Charles" <Charles.Nelson@therasense.com>:

 I need a prop for a lancair 360 that has a io360 with 10:1 compression
 pistons in it.  My options are below:
 
 New recommended Hartzell Prop - expensive
 Within limits 68 inch blades on existing hub
 Within limits 66 inch blades on existing hub
 
 Does anyone have any suggestions, gotchas, considerations, or general feed
 back on this?