What's the big deal you say? Well for one thing "they don't make those anymore." Many Euro warbirds with original radial engines now fly with US built engines, and likewise, some of the restored ME-109s fly with Brit V12's instead of the upside down German ones.
THE ORIGINAL JETS in a ME-262 WERE STARTED WITH a 2 stroke rope start piston engine!! Mounted---in the nose of the jet!!