Hi I am presently restoring a 1974 sprint veloce,it's in bad shape and needs total rebuild I've made a jig to keep the frame straight whilst I tackle the frame,I've removed the legshield,splash plate etc before I go too crazy with the plating can anyone give me the measurement headset to seat corner,I'd hate to start welding all the panels back to find it fails the mot would appreciate any replies as I'm poised with the mig cheers