Just spotted this one Jerry. Looks like you didn't get much response.
If you haven't found out already, yes the 143 was 1st Frontera. Forks were 35mm betors (in line axle), same as pursags of the era. Travel about 7.5". Rear wheel travel about 6" with Telescos standard fitment.
Tank was diff on the 250 models (152 & 180), smaller & had no 'tool-box' compartment on top - similar shape to what Pomeroy used on his GP bikes (so the pursang guys like em for their 'sangs)