Which 360 Block to use: LA or Magnum?

Magnums have a better oil pan..... and a roller spider boss. and a wacky reverse rotation water pump and a serpentine belt system, and maybe no provisions for a mechanical fuel pump on the cam (?) and of course the different flex plate and balance provisions...and a limited intake manifold selection, but has 1.6 rockers...on studs. plus ugly valve covers but they seal better due to a machined gasket surface. and the heads do seem to flow a little better with smaller valve stems...Hmm what else. Hows the motor mount provisions on a Magnum? Any inexpensive after market SFI dampers? Heck, I never owned a Magnum, what do I know.....except the rod little ends are thinner.