To find the nearest (and thus probably the fastest) mirror, see the list of Debian mirrors.
When downloading files from a Debian mirror, be sure to download the files in binary mode, not text or automatic mode.
The installation images are located on each Debian mirror in the directory debian/dists/sarge/main/installer-m68k/current/images/ — the MANIFEST lists each image and its purpose.
Some m68k subarchs have a choice of kernels to install. In general we recommend trying the most recent version first. If your subarch or machine needs to use a 2.2.x kernel, make sure you choose one of the images that supports 2.2.x kernels (see the MANIFEST).
All of the m68k images for use with 2.2.x kernels, require the kernel