DTS will custom make any driveshaft you need.....you just need to have the exact measurement of your driveshaft. Preferably taking your old one to them so they can match it up.
have you checked with the driveshaft shop in New York? www.thedriveshaftshop.com
might offer some alternatives as well. they can make you a driveshaft to handle any Hp/tq need. ask for Frank and tell him we sent ya....he likes us