7 1/4 Upgrade

I have had four 7 1/4 rears and beat on them mercilessly. None of them broke. If you swap in an 8 1/4 you will neeed a shorter driveshaft.

Well I've changed it over on my barracuda(7 1/4 to 8 1/4) and the driveshaft fit right back in with no changes.