Thanks for the replies. This is such a great site. Good people here and helpful. One thing I noticed was that in the LMC catalog, CC45 edition page 154 for a points distributor are for 73 and 74 only. I did not know that they distributors were different verses the earlier inlines. Maybe they were shorter??? Wouldn't they be all the same? Going to order an inline next week and sell this 350 I have. Runs awesome and smooth but for the amount of the running I do its not practical. Would a 2bbl from a 350 be plenty of cfm for the 250 with a mild rv cam? I don't want to over or under carb it. Henry