Leaky capacitors need replacement?

I need to open the amp back up and take some pictures and measurements and I'll post them later.  It's just a matter of what will fit.

+1 georgehifi

OK, here's a bunch of pictures:
Imgur: The magic of the Internet

I have amp #1249, if that means anything regarding how old it is.

The caps needing replacement are around 15-20mm wide and 40-45mm or so long and are axial and connected as show in the pictures (picture #2, at the bottom right, the two grey ones). 

It looks like one side of each capacitor runs to the ground from the AC plug and then goes through the cap and a resistor to what I imagine is the transformer.  The two capacitors are connected together at ground and the two resistors are connected together at the transformer but they don't connect at the tabbed thingy in the middle, which is just a separator.

Can I shove some small radials in there?  Probably.  I have some vertical height to work with but will the leads be long enough to reach where they need to go?  I'm not sure.  That's my concern with radials.

I could also just use a couple of axials of approximately the same size.  I found two on Mouser:

336TTA350M Cornell Dubilier - CDE | Mouser
PEG124UH2330QL1 KEMET | Mouser

Here's detailed specs for the KEMET since no ripple current is listed:   PEG124UH2330QL1 (kemet.com)

It looks like either will fit fine.  Should I order some of these and take them and the amp to a local tech for replacement or are the radials mentioned preferred?

I'm not as in depth about amp building and repairs as others around here, but now that I see this,  I don't see why you couldn't do what you wanted to in the first place and use a decent metalized polypropylene there, say 33uf/400v.  I don't see any reason why a bipolar wouldn't work there.  Since Ralph chimed in here @atmasphere    I would get his expert advice