Re: 4th gen Firebird build, are "T Tops" a strength issue?
 

I've built several Ttop Fbodies , but I will only do them with cages ,no problem with strength , easy to convert to full top with a donor car.
T structure under the roof is the same as a non t top car .
I do recommend wearing arm restraints with them and by the way running without them in place requires the use of arm restraints ,same as a roadster.

Re: 4th gen Firebird build, are "T Tops" a strength issue?
 

I was told about mine, by one of the most knowledgeable people I know and highly respect t not worry about mine.

Edit: They all are built with the same roof structure. Simply glueing that sheet metal front piece in place to cover the holes won't add measureable strength to the vehicle. That is all it is, a piece of tin, that is actually glued in place on the non-tee top cars.