3&3/4 bolt patern

i stopped in the shop up the rd from where i live an there was a pretty nice 64 valiant a young fellow was bitching about said he couldnt fine any wheels for it . i told i probable had some at the house 4inch bolt pattern right ..... wrong ....... 3 3/4 never in my time did i ever here of a 5 lug pattern that small . any of you ever have this problem whats the fix ?????????other than the usual get rid of the old an in with the new