I've got the earlier silver and green GSP P-47 that's about a year old. I'm not sure if the newer GSP model is the same, but here are my thoughts on mine. I'm a bit slow, even with an ARF, and just recently got around to putting it together.
- The aileron servos have to be low profile. On mine, the plastic servo cover won't fit over the normal size Hitech servos. I went with a pair of Expert mini servos that I've had good luck with in other airplanes. A bit lighter as well.
- I've installed mechanical retracts and have significantly beefed up the mounting area. I'd do the same if I was going with the stock fixed gear too. The majority, if not all of the gear bracing is attached to the wing sheeting and the foam. A club member has the smaller GSP P-47 with retracts and I saw his first landing. Everything looked good until the wheels actually touched the ground then they BOTH just folded back. He rebuilt the mounts usung heavy fiberlass reinforncements and has been flying problem free for about 6 months.
- The retract servo mounting system included with the kit is pretty ridiculous. I just hollowed out more foam in the area and built a "standard" mount for it.
- I glued hardwood blocks inside the fuselage where the canopy mounting screws attach.
- The plane's fit and finish appears excellent. The canopy fits beautifully as does the rather beefy cowl. The wing halves and the horizontal stab fit perfectly and were held with 30 min epoxy. The push rod fuselage exit points depicted in the rather sparse, but industry average, instruction sheets didn't work for me. I replaced all of the horns with World Model hardware and the push rods with carbon fiber.
- I just purchased a Saito 150 and hope to get it in this week.
Hope this helps.
Dave