Has anyone had a single driveshaft made for them an got rid of their two piece one?

 

something about driveshaft being over 69" or 79" ( i cant remember one or the other though) the drive shaft starts to "lope" ( there's a techi term for it i can't member either was quite a few years ago when i was looking to do this too) at higher rpm's the drive shaft will flex and look like a skipping rope ( obviously not as exagerated) and it will tear your transfercase/rearend to bits.

 

Well my driveline bit the bullet today!!!. I had it repaired while I was at work. I got all spicer u joints(biggest tey could fit) and a stronger an bigger carrier bearing, Ill post some pics soon!!!