You're still rolling the dice...
If you can lay down a good primer sealer without any problems, you should be o.k., but I've still seen it lift.
When my 442 and wagon inevitably get painted, they will be stripped to bare metal first.
Working at the restoration shop I saw too many problems trying to go over old paint.
To me, it's not worth the potential time saved versus the time/wasted materials it takes to re-do it...
If you can lay down a good primer sealer without any problems, you should be o.k., but I've still seen it lift.
When my 442 and wagon inevitably get painted, they will be stripped to bare metal first.
Working at the restoration shop I saw too many problems trying to go over old paint.
To me, it's not worth the potential time saved versus the time/wasted materials it takes to re-do it...