Engine #'s

[Rick Fedorchak <richard.fedorchak@gsfc.nasa.gov>]

....Retrieved a couple of blocks and a some cylinder heads from a friends
garage this weekend.  I think these are both 260 blocks and supposedly, one
is from a Tiger , and one from a Fairlane or something like that.

It's been so long since I've had my hands on these items, I can't remember
which is which.

Casting #'s as follows:

Block #1                5G20
                                C4OE-6015E

Block #2                4F29
                                C4OE-6015E

Anyone know which is which.   Are they different in any way ?  ( i.e., does
it even matter ? )