The World Models Dago red is a superior plane. I don't think there is anybody here to dispute it.

I 've had thre of the WM P-51's and a couple buddies have the Dago. You will find many of us here have a variety of engine choices.

If you want a clean front end--meaning not cutting up the cowl much except underneath, then go with a fourstroke. I run a Saito 100 but is stuffed in their. I recommend a 91FS will fit better and still get some serious speed with the right prop. Brand is your option-Saito, YS, OS whatever.

Any two stroke will require some visible damage to the cowl but will fly very well.