1966 dart gt 273 swaping to a 360

You need a 360 center sump pan and oil pump pick up, Summit & Mopar sell it or a used pan from a passanger car 360.
I use the original 66 motor mounts; driver side just needs washers to get the right spacing; passanger side should have a triganular peice welded to it to get a 3rd block bolt into the mount. If you want a diagram send me a PM with your e-mail & I'll scan it.
If you use the 66 exhaust manifolds, check the fit of the driver side manifold to your 360 head - the rear exhaust port face might hit the 66 manifold where it curves inward.
I use a 66 water pump to get the lower hose on the same side as the 66 radiator.
A 360 66 A Body is a blast.