Forgive me if this has already been posted at some point in time, but can someone give me the pros and cons of a P/G in a 66 Imp? There's going to be a 350 in it for an engine.

Can't think of many pros unless it is new, already there and a totally original car that you really won't drive much. It is too easy to put in a modern overdrive trans that will give you much better performance and much better mileage at the same time. For a quick overview go to Bowtie Overdrives.

Yup; four gears beats two every time. Cuts gas bill by 30% if you use a 700R4 33% if you pick a 200R4 that is a direct bolt in for your current PowerGlide. No slipping and better acceleration can not think of a reason to keep a 'Glide unless it is going to be a points chasing show car.

Big Dave