BBC do seem to go through starters if they are high compression motors. I used to go through them all the time in my 427 when it was 11:1 cr, but once I dropped it down to 9.5:1 it literally stopped eating starters. I've had the same starter in the car for 13 yrs. now.
I have Doug Thorley headers on my '71 Camaro, and I can pull a starter and replace it wihtout moving anything. I had the first set of Doug's headers on the car from 1974 until this year, and just replaced them with another set of Doug's headers, and they fit equally well.