Slant 6 to 340 Engine Swap in 69' Dart

If you're going with the aluminum water pump ('70 and later setup) use everything (brackets and pulleys) for the '70 and up so things will match. You can use the basic A/C compressor, but, it will need the SB clutch/pulley and maybe oil pan. The A/C hoses will probably have to be changed to the V8 ones too. The condenser and evaporator assembly is the same and can be reused. P/S pump will depend on which brand pump and if there is a V8 pulley available to fit it. Same with brackets. As mentioned, you will need a small block transmission. Get a '69 up 904. That will install with the same mount and driveshaft as your 6cyl. The engine wiring harness will work fine too. Some wires will be a little long. I'd just rewrap the harness a bit to shorten them. Same starter and alternator.