If desperate someday, you can re-rubber yours. I've done that for AC hoses, using a Mastercool crimper, but p.s. hoses likely need more rugged ferrules than AC, so the hydraulic shop suggestion is good. Indeed, I recall having my 1965 C-body hoses re-rubbered at one in Atlanta many years ago (only ~$8 each). I re-rubbered the h.p. p.s. hose in my 1985 M-B, but it has "field-repairable" fittings which unscrew from the hose (Gates?). I used 2-wire 3000 psig hydraulic hose even though M-B used just nylon reinforced hose (rated ~1000 psig). The h.p. p.s. hose in my 1965 C-body has the same fittings as my 1965 Dart on each end (recall), but the hose doesn't have that inline splice to change hose size in the middle. It is likely slightly longer, but "should work". Ditto for 1965 B-body, which I recall is identical to A-body.