Hello everyone! I am re opening this thread after a few years because I’m building a brand new excelleron 90 and I can’t decide wether to use a NIB Rossi R 90 FI RC (rear exhaus, I already have this engine) with a long tuned pipe, or to buy a new DLE 20 engine?

supposedly, the Rossi Wil throw 4.1 HP@15,000rpm vs the DLE 2.5HP @8500 RPM

i am making my own FAI fuel, and this is my first pattern ship. What are your thoughts? Should I get rid of the Rossi and go for Dle 20? Or use the vintage Rossi engine with the pipe? I have no problem modifying the fuselage to accommodate the pipe