I strongly suspect some changes will be required. Carefully measure the draft on your 27, when we built the trailer for our 27 we found some discrepancies from the published figures. Our boat and several others in the yard proved to have a 4ft 6in draft, a sufficient difference to cause changes in trailer structure. Weight may be another issue, I can't remember the exact figures, but the few times we had the boat craned it proved to be a lot heavier than indicated. The boat equipped for trailering (cruising), on the trailer, tipped the scales at 9000 lbs.