LCA's and ball joints - 73 B body

Posting here 'cause there's more eyes .... this is regarding my 73 Roadrunner. Wow - wish I'd done more research, everything I read up to today said lower ball joints were press fit. My replacements I ordered are press fit. Anyway , gave my LCA's to a buddy who had press access - he did a great job with the welded washer/torsion bar bushing removal trick, but also pressed out the ball joints, obviously the threads are shot , I'm assuming I can press in the new and tack weld ........ doubt I'll ever be replacing again as it won't be driven much .... just a few tacks or a full bead ? Heat issues ? Thanks. New LCA's are not an option at this point unless freebies.