no, you dont have to weld it. and I will tell them I didn't install it when I talk to another moron that works there tomarow. I had a ZX2 before that I put a lot of money in, (Laugh all you want, i'll post pics if you want) and never had issues with companies. Then, after I buy a Mustang, every time I buy something, there is a problem.
SSBC-sent me six wrong rotors, including corvette ones, before I got the right ones
Pypes-see above
Eibach sportlines from 50 Resto- destroyed in the mail, UPS put them in a hagared box that was falling appart, 1/8 of the powdercoating was worn off cuz they had two pieces of brown paper "packing." Springs were about to fall out of the gaping holes in the box
New Headlights from Mustangs Unlimited-fell apart after one week of them being on the car. New ones will be here begining of May, talked to them a month ago to resolve it. (not getting the same ones)
I Just am about to give up on modding this car, cuz its causing me so many headaches. wish i had a penny for every minute i spent on the phone with these companies