Indeed, Slackware still defaults to LILO/eLILO and it works perfectly fine on modern hardware, older hardware from LILO's heyday should be no issue at all.

I still hang on to a PIII based Dell Latitude laptop from 2001 and Slackware -current runs surprisingly well on it (along with BeOS 5.1 from my original disc, QNX RTOS, OpenBSD, NetBSD, and a few other obscure OSes from its generation to today).