I have a 180 on my ST and I love it. Make sure to reinforce your firewall and landing gear though. I have yet to find the perfect prop for it yet and judging by the snow on the way here today that won't be happening any time soon. I've used a 16 X4W 17X8 17X6 and seem to like the 18X5 the best so far. I also put in a 24 oz tank because the 180 sucks fuel like crazy. I can now get a 13-14 minute flight with that. For a few dollars more than the 150 and the same weight, you can't go wrong with the 180.

ME