Stripped f4i motor mounts, fix with engine in frame?

[Cisco5311]

I bought a F4i that mostly came in boxes. Once I got to installing the cage, found out that JB weld was the only threads the motor mounts had lol.

I dropped the motor down a bit so that I could drill and tap the holes easier. I figured if I tried to do it in place I would fuck more stuff up. Took some time but in the end it was well worth it!