340 TA with x heads ? or not

69 Cuda 440 said
Agree,

The #2531984 'X' '340' Cylinder Heads from 1968 thru 1971 are just regular
'standard' 340 Performance Cylinder Heads.

The stock 'X' heads will flow at

Intake........ 205 CFM @ .400" Lift and 220 CFM @ .500" Lift.
Exhaust...... 135 CFM @ .400" Lift and 140 CFM @ .500" Lift

Chrysler replaced the x head with the J head as a running change in 1970. But the J heads still had the 2.02 intakes through 71. There's not much difference between an X head and a J head with 2.02 intakes.