Four star 60 ARF
Crash_N_Burn
I haven't seen the yellow one but can't imagine it being any better looking than the red. What caught my eye was that it was hanging up there and looked so plain as compared to the others on the display. I remember thinking that it looked dusty like it had been hanging in a hobby shop for awhile. Took a close look and saw that it was the ARF. Not impressed, at least visually. I do not recall any difference from the top and bottom wing.
I am actually on my third 4 star 60. This one is powered with a OS91 Surpass. As far as mods, I clipped the wings one bay, added about 1 1/4 inch to the rudder and elevator. I also am using TNT gear. Right now it is my favorite airplane. The extra on the tail improves the knife edge and when you add the power, the tail comes up instantly. Lot's of fun. I am also going to rebuild one of the first two that crashed due to pilot error. I just picked up a extra wing kit. Most definitely will clip the wing, maybe a little more. The first two had a Supertiger 90 up front. Way too much power but lots of fun.
I don't know about mounting an engine sideways. You have the cheeks to contend with and it might look funny. I have seen one or two of these with cowlings. Really adds to the appearance. Might experiment with a cowl also. Hope this helps.