Originally posted by Matt167
...you will spend less time and money making the 390 a performer than the low compression 429 unless it is a 1969- 1970 or 1971 and not a 1972 up.
I don't know how much might be spent converting the Galaxie to accomodate the 429, but I believe rebuilding a 390 will be much more expensive than a 429, when it comes to buying aftermarket parts for the two engines.

Paul