How do you get a Suspension to hook, when the track surface is marginal at best

Rear axle is done except adding the oil.

Next is pulling my transmission.
fixing all the seal leak is a no brainer but,
would like some thoughts about the stripped out transmission crossmember bolt hole. I have no idea how long it has been this way but while it out and on the bench.............How would you fix it. All the thread are gone in the alu bolt hole.
Was planning on using a Helicoil........is there anything better out there?!?