I want to convert my 88 Firebird coupe hard top into a T-Top . Is that possible

 

Be better to buy a t-top car to begin with and not ruin the one you have.

 

While just about anything is possible with these cars---with enough skill, time, facilities, and $$$---a more relevant question would be, Is it practical? IMO, it isn't.

As dmccain recommended, you'd very likely be much better off to sell your current 3rd gen and then find and buy the one already equipped with the features/options you want.

 

Most people get a donor car that already has t-tops, cut the roofs off both cars, then weld the t-top roof onto the one you want to keep.

That being said, it's much, much easier to just sell what you have and find another car that you like with t-tops.

 

I would NOT do this. Unibody cars have structurally overlapped and reinforced panels for impact and (in this case) rollover protection. You don't simply lop off the roof and butt-weld a new roof on at the pillars. Also the same reason you don't install aftermarket T-Tops. I've seen several aftermarket sunroof companies cut holes in roof panels with complete disregard for the roof bows, or reinforcements. Not a good idea. Unless you fancy cradle to grave liability.

 

I agree. It's hard to know what the structural integrity of the butt welded joints will be. I would not want to take that risk.

Another option is to find a donor car with Cars and Concepts aftermarket T-Tops. Take the C&C T-Top kit apart from the donor car and install it on the car with new seals just like it was done back in the day as a new kit. It would be as good or not good as it was back then. Some people liked the C&C T-tops and some didn't. Still, unless there is some very compelling reason to convert this particular car to T-Top, I would find another car with factory T-Tops.

 

back in the 90's i did just this thing. i got another jacked up but good TTop car. i did splice and section the pillars. i would NOT recommend EVER butt connecting the pillars. with that being said.... I agree with what the others have said. really not worth the effort when you can just get one with what you want.

 

Go find a t top f body with a blown motor or bad trans. Strip it down give it a paint job. Then….Swap all the parts you want to that other vehicle. You’ll be time and money ahead..