Steering Head Bearing (Crossreference!)

I swapped out the roller steering head bearings with tapered roller bearings. It wasn't a very difficult job.

Surprisingly, the back of the bearing box contained a fitment chart. I thought I'd publish the info for anyone who might consider performing a fork swap on an XS 400 (like, um, Future Me).

Bikes with the same size steering head bearings as Yamaha SOHC XS400 bikes:
Suzuki
79-81 RM100, 79080 RM125, 79-80 RM250, 79-80 RM400
Yamaha
84-85 FJ600, 74-76 RD200, 73-75 RD250, 73-75 RD350, 76-79 RD400, 84-85 RZ350, 80-82 SR250 Exciter, 87 SRX250, 72-82 TZ250, 81-83 XJ550 Maxim, 81-83 XJ550 Seca, 76-77 XS360, 77-83 XS400 & Maxim, 82-83 XT550, 95-07 XV250, 88-90 XV250 Route 66, 83 XV550 Virago, 87-99 XV535 Virago, 83 YTM200 EK, 84 YTM200 EL, 85 YTM200 ERN, 83 YTM200K, 84 YTM200L, 85 YTM200N, 85-86 YTM225 Tri-moto, 83-84 YTM225 DXL, 86-90 YX600 Radian

I'm really stoked about getting it out on the road to see if all fo these changes have improved the handling.