Hi, I would appreciate anyone's opinion on this. I own a 67 bird convertible daily driver. Right now it has a chevy 350 in it and 350 TH tranny. My bearing are worn so it is just a matter of time to replace or repair. I would like to return it to a pontiac engine and am interested in maybe a 350 HO, so I wouldn't have to change out the transmission. Although the idea of a 400 would be cool too. But I have also heard that the chevy 350 is a cheaper engine to modify with better results. I guess I would like about 325hp when I am done, any thoughts. Thanks Kevin