-- Update.....
Dennys driveshaft got back to me and said they cant do that 2" in steel for that length.
"Sorry...we cannot do that length in a 2 inch diameter."
I asked them what the max length is - but suspect its also tied to HP. Maybe ok on tyhe old 150HP engine
So right now still stuck on choices/options
1) Custom 50x9x9 narrow tank ..... might fit ..... along passenger rail near fuel intake.
2) NonCustom Tank on the drivers side wheres there is more space and run a longer fuel pickup across the top to the passenger side.
3) Move it to rear.
Thoughts ? Especially on [2] ??