I own a 1969 Plymouth Fury III. Matching numbers 383 with a 4.316 bore, 4.25 stroke bringing it to 497ci.
Procomp "victor" style heads
Hughes roller rockers 1.6:1
Roller Comp cam and lifters
Smith Bros titanium pushrods
440 source crank and h-beam rods
JE custom pistons (1.32" compression hight)...