7 1/4 OEM spider gears help

You might consider selling me that beauty, and so solve your problem; I'll put something a lil more robust in there.

BTW
How'd you manage to mount that satellite dish atop your antenna? I'd be taking that off right away,lol.

All kidding aside, nice car, and I hope you find what you need.
Oh and I should mention that spiders should always be changed together with the matching side-gears; they wear out together. Your replacement spiders, installed on the old sidegears, will start to break-in to them, and will soon look just like the ones you're replacing. A sureGrip will go along way towards solving your problem, for a long time to come.