No, they never gave me a mfg name... I ordered a ton from them at one time and got it all. It is full fiberglass (inner/outer). If I could get the steel frame, I would probably lean towards that one, as long as there are no bad effects on getting it all to seal together.
The trunk was the vacuum formed and it fit great. There is only one section that is a bit high, that I did not fix, but I can live with it. I am in TX and they had to truck ship it for me and it was costly... but since I bought so much from them at one time... one truck came that had all I needed and I even got a discount for the amount spent... not too bad.
Just call them and tell them what you are looking for. They were very upfront with me (especially on the california special quarter trim) and they did not lie on anything. Worth the effort, and just ask anyone who you are thinking of buying from.
Good luck and thanks for the compliments.