Lack of power is not your only probelm with the .28XLS. the plane was designed for a .40/.46BB engine so your going to have to use some "creative enginering" to mount the narrow motor. Your engine also weights about 7oz less than any BB40 size motor,have LOT'S of lead handy for CG adjustments. the motor will prolly do ok given what your looking to do, just keep the plane as light as possible and swing a 10x4 prop(after break-in). If you do try it you will have NO get out of trouble power at all, keep it "flying on the wing" AT ALL TIMES...... I cant belive i just said that about a Profile[sm=biggrin.gif]

BTW my .28xls with tuned pipe hauls my quickie 500 around nicely, it's right at 3lb 13oz(fueled) with a totaly different air frame though.The .28XLS is a nice little motor... just not for the Fun tiger.