Yes it look the same in a fast look, but the engine block is also different
Nice vintage plane you have !
Here is my, but this is only 60"
http://www.youtube.com/watch?v=b8lr_n_B8mg
Aha 18x8 for some low rpm, i maybe try it if i do a conversion on this Tanaka
Do you have a link to Rcexl ignition ?