GS boot bigger that the 3200/4200, dont think so.
Q: Hi Strange question but I have a 4200 Spyder, do you know if the boot is the same size? 09-Jul-10
A: Hi Craig, 100% positive it is. I've had 5 Maserati's from new, 1 x 4200 coupe 2 x 4200 Spiders and 2 Grand sports. The grand sport boot is very slightly bigger but only by a few inches. The bags fit in all of them so long as you haven't got the space saver spare and use the run flats the cars come with, Michelin pilots I seem to recall. They do stack in a set order. I may be able to get Lee from cars Maserati Ferrari to get the diagram? Hope that's of help.