Fuse box upgrade : Spitfire & GT6 Forum : Triumph Jun 03, 2019Is there a definitive thread about replacing/upgrading the old glass tube fuse box with a blade/ATC fuse box? There are lots of these on Amazon but I am not sure which one to pick. If I do this replacement should I mount the new fuse box where the old one currently is or is there a better/pref Fuse Panel Upgrade : Spitfire & GT6 Forum : Triumph Feb 25, 20161978 Triumph Spitfire 1500 Des Moines, IA USA. Sponsored Links. One more upgrade that I preformed on the new fuse block was the installation of small LEDs which illuminate when a fuse blows or is removed. Photos are of a stock fuse box. Attachments: Fuse block 1 24 KB.