Driveshaft

What are the different sizes they use for U-Joints? The Driveshaft is in Phase and the vibration is only a high speed thing. Like 90mph My main issue is the amount of slag I can hear inside the thing. But if your buddy can do it for a resonable price -unlike Pats Driveline- Then mos tlikely go that way, no big rush either since winters comeing.