440 Clutch Recommendation.

I checked out ACT's web site. I noticed their 10.5" clutch was rated for 620ft/lbs torque which they say is 32% above stock oem. This would suggest that the stock 10.5" clutch is rated for about 475ft/lbs. ACT didn't list an 11" clutch for a mopar so I can't compare. I did check out there GM 10.5" to 11" clutches and the 11" was rated about 12% higher which is about what I would expect.

Either size should work for my application when using an oem clutch. My gut tells me the difference in size might be relevant when shifting at 7-8k rpm, but maybe not be too noticeable with a 3-4k shift. My power band should be done not too much above 4-4.5k. Does anybody have direct comparison between a 10.5" and 11" clutch when using an A833 as far as shifting feel/engagement goes?

I'm probably overthinking this whole thing, but I just don't want to go 11" and get that "heavy" feel if I can avoid it by going the 10.5" route.