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
More advice, please. I am unable to locate a replacement for a Nichicon 4700uf, 100v, radial leads, 30mm diameter x 45mm height, 85 centigrade. The diameter is the problem. The newer caps are 35mm in diameter. Since my amp's circuit board has 4 packed together, there's no room for another 5mm each. I've checked Digikey, Mouser & Newark. Can a snap-in be converted somehow? Any suggestions?
It doesn't need to be a Nichicon. There are plenty of good quality cap manufacturers out there. Why don't you call the manufacturer of the tube amp you own and see how much they want for the part.