904 front u-joint yoke

Is it possible to acquire a large u-joint slip yoke for a 1972 904 TF?

Mine has the stock, smaller u-joint, and I'm afraid for its life, on the strip.

I have never seen one with the larger (727-size) u-joint, but I am in hopes that someone builds these.

Any info will be much appreciated.

Bill., in Conway, Arkansas