If it's a Tecumseh powered tiller, there's only three options.
WT-241 and WT-242 used bolt on tines, part numbers 4330 and 4331 (RH and LH tines)
WT-244 used tine and tube assemblies (numbers 5400 and 5401) that were pinned to the shaft with shear pins.
You can see all three parts lists in the Prior Models V - Ag attachment manual back on the manuals page. (http://www.wheelhorse.org/manuals.html
I don't know of any direct replacements, your best bet is to try somewhere like Ray's Mower Shop in Boyertown PA. (610) 367-2078. I know he had
a WT tiller that he was parting, give him a call and see if he still has the tines, what shape their in and if they're the ones you need. Good luck.
--"I knew it, I'm surrounded by....."