Well, thanks to SD, I got the SU's in better shape--enough to be confident about driving it. Now disaster!! As I was doing the final SU tuning, an oil leak sprang up at the rear of the oil pan between the pan and the bell housing. Quite a bit of oil. Question is, is it coming from the rear seal or from an oil galley plug at the rear of the block? The oil pump is back there too. Seems I recall that the 1275 does not have a rear seal-----it has a 'flinger' to push the oil back into the pan. I'm not sure about this though. I've been running over 60psi at the oil gauge and have been driving the car for 8 years or so. This is the first leak at this spot. Does anyone have any pics of the rear of the 1275 block? I'm looking for reasons for the leak--oil galleys etc. Friends say it is a leak behind the block and that I'll have to pull the engine. I'm hoping it is the rear oil pan seal. Has anyone had this problem that would comment on it? Thanks, Don