what I have found amazing was working on mopars back in the late 70s early 80s finding mix matched 318/360 heads 1.78/1.5 valve one side 1.88/1.60 other side as repairs started to stack up on used cars/trucks. or 340 engines with 2.02 1 side 1/88 other side
 I have found this on multiple MOPAR engines of all sizes through the years
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60
'01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust,
'05 Dodge Magnum R/T - Too Much to list
'60 Willys CJ5
'01 International LPX - Project,DT466, Allison
'64 Plymouth Valiant, Inj 528 Hemi, 2spd
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