http://shop.marksman-ind.com/drawn-outer-cup-type-110-c.asp
for the bearings at least.
Eg. 17 x 24 x 15 needle bearing is TA1715Z; 17 x 24 x 20 is TA1720Z etc.
Only just got round/needed to do mine after 91,000 miles. At least they lasted longer than my right hand (clutch side) main bearing.