Where can i find a rag top for a 90 honda civic Lx and blue prints for the same

Tweet

I have a 1990 Honda Civic Lx 4 door seden im wanting to find the blue prints of my car Soo i can design a convertible ragtop, by welding the back doors shut and chopping the top.soo if anyone can tell me where i can get a rag top that fits said car that would be aswome, also I need Blue prints to input it in to a computer program soo i can modifiy with out actually touching the car first! Thanks