I have ran the Bils for a while, and infact the TRD package from the factory included the bil's.
IIRC, they're Tokico's?
Correct, post '01 models were Bil's.
Hmm. My 01 TRD has Tokico's all the way around. Maybe some came with Tok and some Bil's, then. Unless post-01 means 02-on. Too early. Can't think.
When I switch, I'll also be going with Bil 5100 series front and back. I like that I can adjust the suspension height on the front with the Bil's.