Yup thats what you need aright, just be careful tho cus when i went to put my skirts back on, they had either shrunk or the replacment arch wasnt exactly the same shape as the OE one, i just took a hammer too it and bent the botton corner in a tad.
Just thought it was worth a mention, maybe test your skirts for legth befor your man gets heavy with the welding..
All the best Justin