Don't know if a 10.5 will fit with the stock springs in place or not. But i had 10.5X28.5 Mickys on my 66 Nova, but had ladder bars, no tubs. it ran a best of 10.31 @ 129.85 with a 406" 6 cylinder front springs and 90/10 shocks on front. I don't remember the 60' times, that was 20 yrs. ago, but the car was very consistent. Turbo 400, 4.86 gears, and a 5500 stall converter, leaving at 4800 on the brake. Same setup with a 377" ran 10.50's @ 126mph.
Zip.