[Dave Ribeiro]

Brian,

I agree with Scott , change the balancer to the 6 3/4 " .. I think that is a 5 1/4" balancer , Pontiac has several dia. up to 7 7/8" ... I have changed balancer's many times without a problem on my racecar ... Most of the pontiac's are externally balanced, unless they have had crank & rod work done..
* Stock pan , after trying several stock replacement oil pans that would't line up the bolt holes ... I try the Jegs stock pan, worked great & cost $59 bucks... Perfect fit, I have since ordered another one.. Good luck ,