purchased crankshaft ford 302 opened box bearing surfaces were purple& black contacted jason at mabco told me to use it anyway would not refund any money told me go pound sand he personally use each cranhshaft as a sit & spin and thety all feel good before they are shipped took it to local machine shop to see if they could do anything with it they said i had a real nice mailbox post jason is a poor example of how to do buisness their own town folk have nothing good say about this co.just read th horror storied all over the internet