Multiple Simultaneous linux_base

[Carl J]

Hi all! I'm running FreeBSD 4.11

Most of my Linux apps need linux_base8,
but I have a few old apps that need linux_base6.

Is there a way to install both simultaneous (and set up some sort
of mapping or such, to enable different app to use different base)?

(I searched the web and archive, but either I didn't see it,
or I didn't understand what some of the posts meant.
So I'm sorry if this is a FAQ)

Thanks!

- Carl