Captive turntable interconnects; should I modify??

Hi. I came across a NOS Denon DP47f turntable from the 80's. Purchased new in Japan by a serviceman & never opened until I got it. A lot to like; well-built, rosewood base, mint, never used condition. I installed a new Ortophon Samba low-output MC cartridge, and run it through a Perreaux SXVI phono preamp. I have nothing to compare it to, but it sounds wonderful in my system. One thing I don't like is the cheap-looking captive interconnects with "Radio Shack" style RCA connections. Will I realize a noticible sonic improvement by installing nice RCA connections on the rear plate and using a nice pair of interconnects? Another option is to hard-wire a relatively thin pair of interconnects directly to the turntable. Advice please. Thanks.