Locating capacitors


I'm re-capping my tube amp. I'm having difficult locating some caps with a Google search. I'm not sure if they're made any more. Can anybody suggest a supplier that might have: SAMHWA axial (light blue casing)(GA) 85° C (M) 9104 350v. Thanks!
steakster
Make sure the amp has been off and you know the high voltage power supplies have been bled. Otherwise you might be in for the shock of your life. I also suggest you get caps rated at 105C. The Panasonic's are quite good. The bigger issue for radials in lead spacing. Make sure you get that close or the cap will not sit flush up against the circuit board.
At that capacitance you might also be able to find a polypropylene film type. It will be a larger and more expensive, but sonically a vast improvement. And those will be radial so they may not fit as well.
I'm getting closer to ordering. Some capacitors have specs that say that the 'load life' is 5000 hours. Others do not even mention load life. Which to choose?
Thanks all for pointing me in the right direction. Hifigeek1, I never would have thought about the lead spacing. This project might take awhile. Let's see if I can put back in the same amount of parts that came out. LOL.
Steakster:

I would choose the cap based on operating temp (105C preferred over 85 C), then the lowest ESR (equivalent series resistance), then finally ripple current (highest best). Load life is generaly the life of the capacitor operated at a given set of conditions specified by the manufacturer (like maximum temp of 105C and max ripple current) before it begins exceeding its specs (say for example, leakage current, which may steadily increase as the cap gets older). A 2000 Hr rating will not be as good as a 5000 hr rating, for example.