Just picked up a 78 400 from a TA with tranny for $100.00 and I am thinking about building it up for my 68. So all said how should I build it will it bolt to the 68 mounts? My understanding is they all interchange. I want to put the original motor up and away and play with something I don't care about. Looking to go .060 and run on 94 octane street driving with 3.55 gears will budget around $3000.00. Anyone have any recomended machine shops around Columbus?