Thx JNorton for the reply

Yes most of my posts have been in the begginers forum but this is my 20'th plane (and all 20 still intact ) and ive been flying for a year , soo far froma beginner im used to flying warbirds but i saw this ShoeString at a show and was on a look out for a plane with speed which flew nice and from all the comments in here about the ShoeString it just had to be that

Im thinking of getting a OS91 Four Stroke to put in, will that fit in with no problems ?