63' Valiant V200 wagon: Getting a bum steer

*BUMP*.

OK, I've already convinced myself that I'll be OK with a U-joint. Now, to decide the brand, and get the correct dimensions. Can anyone confirm: For a '63 Valiant V200 wagon, manual steering - I'll need a 3/4" 36 spline to 3/4" round U-joint?

I'd like not to cut the steering shaft, but assuming a 3 1/4" coupler will require a cut - are there any out there on the smooth round side that are pre-drilled with an accompanying pin (so all I have to do is drill the shaft)? Or am I going to have to get it welded?

Thanks
Dan