Any modern tourer can be made to fit saddle pack lipos, put end to end they are the same size as a stick pack. Easy option to mount them is the
RadshapeRC Lipo Tray, or extra supports in the middle of the battery area and a battery strap rather than tape.
I can't think of any modern tourer that uses saddles and on older chassis the battery mounting area is usually a little too small to get lipos in.