Ist off Never turn on a radio till the filter caps have been replaced, period
2nd test the tubes especially for shorts.
OK first there is only one cap can on the top, and it is a dual cap for filtering the rectified AC to DC. I would just leave it in place to look original and clip the lead under the chassis and substitute those with axial caps, if you have enough room. Since the wire lengths for those caps are not critical you can replace the wires with a little extra length but watch the polarity. Or they will blow up on you, they must replace the caps in the can. You could mount them on top as a last resort.
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The RF -Antenna coil isn't mounted in a can. The IF cans have coils inside that are tuned to 455 KC and have to have matched trimmers or mica caps. I would use middle of the range caps on replacements. There is a good example of this on the web, I will see if I can find it for you.
Heres a good intro:https://www.youtube.com/watch?v=itcOVfAdL4Y&feature=related
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