With the height of the rear of the bucket to the turtle deck I think that's a '22-'25 instead of a '27 but I may be wrong. The '27's don't have so much sweep from the door top to the back, seems to me.
Take a look at Speedway Motors. They have both '23 and '27 T-bucket kits in a dozen or more configurations. I believe their chassis kits are OK and their fiberglass parts will compare well with others too. Seems to me that one of the magazines did a build on one of the Speedway kits several years back, but I can't point you to it. Looks like their complete kits for 23's have the pickup bed instead of turtle deck, but they might swap one in for you, or there may be a turtle kit there that I didn't see. I don't think you'll do one cheaper by buying individual parts.
23T Bucket Body & Kits -
https://www.speedwaymotors.com/Searc...3%20t%20bucket
Turtle Deck -
https://www.speedwaymotors.com/Model...xoCVPQQAvD_BwE
I saw last night on fb about John. The world sure lost a great one. I'm going to miss his humor, advice, and perspective from another portion of the world. Rest in Peace Johnboy.
John Norton aka johnboy