convertible styling, roll bar ? rear seat cancel ? Options

[NaderG]

i was wondering if anybody could help me out with theese stuff ... is there a roll bar out there for a celica ? or does it have to be custom made ? how much would it cost ??
note: i am taling about the plastic one , not the metal ones

also , i saw a mustang today with rear seat cancel , it looked nice and i was wondering if it can be done to out celis .. i will try to get some pics of that , but all of you with fiber glass experience : is it possible to buy one for another car and slightly modify it to fit our 6GC Verts ?

[NaderG]

i am making progress with planing this project ... a 1/4 inch think wood panel would do the trick , underneath will go some supports which i still have no idea what will i use for the supports , i found a website that sells foam in a shape that is really close to what i want so i will buy a couple and cut them to shape , i am also getting vinyl to cover it all up ... i am thinking of wide plastic "ring" to surround the two "humps" but i am still clueless of where to find materials...

SO , i need some help with the following :

1- How do i make the roll bars --> there is two of them ( behind each headrest ) ex: the new miata ?

2- i need some pointers on taking the rear seat out / the seatbelts ?

3- Also i dont know how will i mount the board and the supports , i dont want to be drilling any holes in the original plastic so that i can reverse the whole thing if it fails mid-project or if i didnt like it or something ...PLZ SOMEONE HELP !!!