I put the Warrior spring in and it solved my slippage issues, I've been very happy with it.
,when i looked up Warrior & stock R* clutch springs seperately in yami
website site they both had same pt# so that would lead ya to think they both used same clutch spring.
Anyway,Yami mfg'd what was called the SpeedStar line of hi perf parts for R* ,Yami mfg'd 2 different repl hi perf clutch springs for the R*,1 was listed as having 20% additional clamping force and other was listed as having 25% additonal clamping force. Why Yami supposedly mfg'd 2 rep clutch springs with only 5% diff in calmping force is beyond me!/LOL!!!!
But either spring should work just fine as repl for stock R* clutch spring,couple guys have installed them with good results thus far.
I bought a 25% stronger clutch spring for $90 off Ebay (while still avail!) to have on hand for if/when stock (known weak) clutch spring gives out in my 06 silverado.