The a500 swap is near!!! Could use advice

http://bmracing.com/?wpsc-product=chrysler-sfi-flexplate-‘71-’92-chrysler-360-wtf904

Should be what you need. I've got the same one in my '72. I doubt your car came with 2.4's for gears, maybe 2.91s or close to that. I don't think they ever offered gearing that low in anything. Does it have an 8.25 rear in it?