66 dart rotted cross member

ok as suggested by other members that i thank for reading and commenting my post i checked the undercarrige of my dart to look for further rusted out frame sections other then the torsion bar cross member. The left side frame rail looks a little shakey but no holes yet.
My question is, i will definately be fixing the cross member but would like to know if repair kits are the way to go or should i look for a decent used crossmember from a wrecking yard and weld that in.


thank you


wayne