From the 1942 revised Espee erection diagram I have for one of its associated lined, the T-58 was 39' 3.875" from tip of pilot to end of cab floor/pulling face. 25' 11" wheelbase from hub of rear driver to hub of front pilot wheel. 63" drivers spaced evenly (7'2" btwn hubs). pilot wheels 35" spaced 6'6" apart. More details in the erection diagram.