targa to cabriolet conversion

I have a extensively modified 73 911t thats been updated to a 88 SC look inside and out and now Im undergoing a cabriolet conversion.
has anyone ever done this themselves and if so could you share the knowledge? I have a 84 manual top and the cab brackets off about an 88 vintage car. I having problems on the exact positioning of bracket before welding in.


thanks

Tom

I have a 1985 Cab. It is about 800 pounds heavier than standard Carrera.

My understanding is this is result of stiffening required to prevent body flex.

FYI

The last thread is exactly right. Once you remove the targa frame you loose too much rigidity. The one customer we had, had to instal a custom made roll cage because the body work kept cracking in the door sills and the doors stopped closing correctly. My understanding is that the rockers on a cab are much heavier than any other models.