It's been a long time since my AMC days. Some parts will swap, biggest differ is the bore dia. These sites have some info to get you started...CAT*FIN*k.
www.allpar.com/mopar/amc-engines.html
en.wikipedia.org/wiki/AMC_V8_engine#327
I've never used these guy's but found this.
www.kanter.com/amcn.html
AMC V8, 1956-66 Hudson 287, 327
BMD Overhaul gasket $168.87
BMD Piston 287 (8) $78.25ea
BMD Piston 327 (8) $42.00ea
BMD Ring set 287 $69.22
BMD Ring set 327 $43.26
Piston pin bushing
BMD Main bearing set $137.50
BMD Rod bearing (8) $12.00ea
Connecting Rod
BMD Cam bearing set $42.00
BMD Timing chain $20.60
BMD Cam gear $45.00
BMD Crank gear $20.00
Cam shaft
Exchange only. Specify if mechanical or hydraulic lifters $157.50
D Push rod (16) 1956-57 $12.00ea
D Push rod (16) 1958-66 $8.00ea
MD Rocker arm Specify if mechanical or hydraulic lifters $12.60ea
Rocker shaft
Rocker arm assembly
Exchange or add core deposit of $100.00 $195.00
BMD Valve lifter (16) 1957-60 $10.50ea
BMD Valve lifter (16) 1956, 1961-66 $6.30ea
D Intake 1961-66 valve (8) $8.24ea
D Exhaust 1965-66 valve (8) $8.24ea
D Intake 1956-60 valve (8) $16.22ea
D Exhaust 1956-64 valve (8) $16.22ea
D Valve guide (16) $4.12ea
D Valve spring (16) $6.18ea
Oil pump Exchange or add core deposit of $50.00 $99.75
BMD Oil pump kit $36.75
B Basic Engine overhaul kit. 287
Includes all parts with B. $1294.60
M Master Engine overhaul kit. 287
Includes all parts with M. $1486.12
D Deluxe overhaul kit. 287 Includes all parts with D. Adds 16 valves, 16 guides and 16 Springs $1789.79
B Basic Engine overhaul kit. 327
Includes all parts with B. $1050.68
M Master Engine overhaul kit. 327
Includes all parts with M. $1242.20
D Deluxe overhaul kit. 327 Includes all parts with D. Adds 16 valves, 16 guides and 16 Springs $1558.71