Where can i get big silver can mallory filter caps????

i have a music man rp 112 65, one of the big silver mallory caps has a little bulge of protrusion in the area where bulges indicate faliure. the bulge is localized (the whole top doesnt bulge out) I dont hear the characteritic out 60 hz signal bleeding through.... shlould i even replace it???
the amp is from ealry 80s...

For tube amp questions, Ask Myles Rose .