Weight and Crosswind STOL
As far as the weight question. I don't know how the plane will fly because it's not finished yet. I do know that I took off 36 lbs of junk forward of the CG that is not going back on the plane. Adding up the additional weight of the 0-360 and dynafocal mount I am gaining back 17 lbs. I am still 19 lbs to the good with 20 hp more and a "factory new" engine instead of a factory reman 0-320-160. The cost difference is very minimal going this way.
As far as Crosswind STOL's conversion, I count Charlie as a friend and think he makes a fine product. I personally try to stick to the original design and look of the Super Cub as much as I can or get it close enough that no one will notice. The thing that I like better about the Penn Yan over the others is if anything happens to the company I can still make or get parts for the plane. No special hand built parts. The nose bowl and bottom cowl are made by Univair. The mount is made by Airframes Inc, about 15 minutes from my house by air, and they have a strip. Everyone that has a lot of experience with a 180 in a Cub said the dynafocal mount is the only way to go if you don't want to shake the plane apart. The conical mount holds the engine too tight and transmits all the viberation back into the airframe. Any of the conversions will work, I have several friends that have the Penn Yan and like it, for the money it's a good value as I said.
The Penn Yan kit includes, nose bowl, bottom cowl, dynafocal mount (optional, you may use your stock conical and deduct $500.00), engine mount rubbers, rear mount oil cooler and oil lines, rear heavy duty baffel, for oil cooler mount, new airbox, air filter, 3 new push pull cables, throttle cable mount, all attachment hardware. The props are optional but very reasonable. Their factory new engine cost blew everyone else out of the water by a mile. Crash