THE ZIRLI STUKA DOES'NT REQUIRE ANYMORE POWER THAN THE G-62. THE G-62 FITS VERY NICELY INSIDE THE COWL WITH MINIMAL BUTCHERING. WITH A "BOLD MUFFLER" PITTS STYLE MUFFLER THE EXHAUST TUBES STICK OUT THE BACK OF THE ENGINE AD ARE BARELY NOTICABLE. THE G-62 WITH A MEZJLIK 22X10 THREE BLADE PROP AND YOU HAVE A VERY SCALE FLYING AIRCRAFT. THE FULL SCALE WAS AS FAST AS TODAYS CESSNA 182. THERE IS NO NEED TO GO ANY LARGER THAN THE G-62. THE WEIGHT OF THE G-62 IS ALSO A PERFECT COMBINATION AS NO ADDED BALLAST IS NEEDED. TO BALANCE THE BIRD. AS FAR AS PRICE AND RELIABILITY, THE WHOLE ZENOAH LINE SPEAKS FOR THEMSELVES.