ok some might be misunderstanding his post!

although he included specs on a Nitro models 40 size trainer, that "is not what he has"!

look at the manwell, and notice, it is indeed a "60 size" trainer! so any 46 weather Os, ASP, or TT, will not be enough!

he also said, "cheaper would be better" is why I did not start out with "OS", or a four stroke weather OS or Saito.

my oldest engine I have, is a magnum gp25, and I just fuel, apply power ta glow plug, and after 25 yrs she starts right up, no issues, other then being a bushing engine, and she slobs a lil more fuel!

in short, sounds like the OP just wants too get in the air!

yes there are more then a couple theories about it, "get the best, or you will be disappointed"
or get what you can afford, and if it ends up, you really like flying, and want too stick with it, you can always upgrade later, as you fly what you got! which is what I subscribe too!

I started, with a 50 dollar sig Kadet Jr kit, the fore mentioned,25 buck magnum, a turkey baster, and a clip on glow igniter! all in a cardboard box!
and thanks too some great guys, at my not so local field,(15 miles ta next town over) who took me in a taught me how too fly with what I brought!

oh and a second hand 7channel futaba am radio I got for a C-note!