SERGIO... With the use of extensions.... and a simple mod to the fuse
the battery can go further back and give you what you need??????
Just a thought..... Other than that..... you need the weights.... The non
use of a spinner and wheel pants can help... lighter props and main
wheels help also...

You said: FOR ENGINE THE INSTRUCTIONS SAID 5" (BACK PLATE OF
THE SPINER FROM THE FIREWALL)

You know that's just so that the cowl/engine hub/spinner will fit right
when the cowl is installed... But that can also be modified... Some have
cut off the cowl mounting tabs on the fuse./firewall(that also reduces
weight on the nose) and just screwed the cowl into the firewall area
instead of those 4 tabs...