Hello,!
Basic´s are the same i dare to say.
Same type of engine,gearbox,up right etc..
steering rack etc...
Wishbones pretty much the same but differs somewhat in design, pick up points similiar.
Coilover mounting points differs..
Body basicly same with small "personal"differences.
Interior follows same basic line.
Chassis somewhat same construction but design layout different.
Tornado seems to bee a bit "lighter" construction...
Not as rough dimensions...details...
Tornado has had a lot of options for a long time, but i think GTD offered a lot in the last yers too.
Said because i dio not know what kind of sales figures they´ve got now?
Lot of auto parts used are from same suorces.
You can have personal relations and thoughts about these two.
But that does´nt solve anything.
Tornado seems to have been more cost "efficient"!!!!
And the people at Tornado has been more up front with reality, than perhaps better sales managment at GTD.
Of personal experience and talking to others.
Of course smaller details differ between the cars, obviously !
Tornado skipped the in my mind awful wire gearchange mechanism early if they ever did them..
Big improvment.
I think that GTD change theirs at some time too ?
Tornado system with custom bellhousings was a terrific change in several way´s over the adapter...
GTD also got into this option i think.
Wheels are mostly from same sources, as well.
Good quality cars both.
Both offered several gel coat colours on their bodies.
GTD used to change rear position of rear side body clips.
Radiators of similiar design.
Custom built.
Plexi similiar.
Parts many times are quit interchangable, some times need a little trimming thou !
Well, i run out of time now...
Happy hunting !
My pretty accurate point of view...